diff --git a/src/compojure/api/middleware.clj b/src/compojure/api/middleware.clj
index 3177ce68..36a249e1 100644
--- a/src/compojure/api/middleware.clj
+++ b/src/compojure/api/middleware.clj
@@ -89,12 +89,6 @@
 ;; Options
 ;;
 
-;; 1.1.x
-(defn get-options
-  "Extracts compojure-api options from the request."
-  [request]
-  (::options request))
-
 (defn wrap-inject-data
   "Injects data into the request."
   [handler data]
@@ -124,13 +118,6 @@
 (def no-response-coercion
   (constantly (dissoc default-coercion-matchers :response)))
 
-(defn coercion-matchers [request]
-  (let [options (get-options request)]
-    (if (contains? options :coercion)
-      (if-let [provider (:coercion options)]
-        (provider request))
-      default-coercion-matchers)))
-
 ;;
 ;; Muuntaja
 ;;
@@ -219,8 +206,7 @@
 ;;
 
 (def api-middleware-defaults
-  {::api-middleware-defaults true
-   :formats ::default
+  {:formats ::default
    :exceptions {:handlers {:ring.util.http-response/response ex/http-response-handler
                            ::ex/request-validation ex/request-validation-handler
                            ::ex/request-parsing ex/request-parsing-handler
@@ -258,21 +244,12 @@
 
   ### Options
 
-  - **:formatter**                 either :ring-middleware-format or :muuntaja.
-                                   During 2.x pre-releases, this will be a required key, unless
-                                   :formats is provided, which is equivalent to setting to :muuntaja.
-                                   Stable 2.x releases will default to :ring-middleware-format if
-                                   not provided or :format is set, unless :formats is provided,
-                                   which is equivalent to setting to :muuntaja.
-                                   Stable 2.x will print a deprecation warning if implicitly
-                                   or explicitly set to :ring-middleware-format.
-
   - **:exceptions**                for *compojure.api.middleware/wrap-exceptions* (nil to unmount it)
       - **:handlers**                Map of error handlers for different exception types, type refers to `:type` key in ExceptionInfo data.
 
   - **:formats**                   for Muuntaja middleware. Value can be a valid muuntaja options-map,
                                    a Muuntaja instance or nil (to unmount it). See
-                                   https://github.com/metosin/muuntaja/blob/master/doc/Configuration.md for details.
+                                   https://github.com/metosin/muuntaja/wiki/Configuration for details.
 
   - **:middleware**                vector of extra middleware to be applied last (just before the handler).
 
@@ -289,41 +266,9 @@
                                    you might want to take look at using wrap-components
                                    middleware manually.). Defaults to nil (middleware not mounted)."
   ([handler]
-   (throw (ex-info (str "ERROR: Please set `:formatter :muuntaja` in the options map of `api-middleware.\n"
-                        "e.g., (api-middleware <handler> {:formatter :muuntaja})\n"
-                        "To prepare for backwards compatibility with compojure-api 1.x, the formatting library must be \n"
-                        "explicitly chosen if not configured by `:format` (ring-middleware-format) or\n"
-                        "`:formats` (muuntaja). Once 2.x is stable, the default will be `:formatter :ring-middleware-format`.")
-                   {}))
    (api-middleware handler api-middleware-defaults))
   ([handler options]
-   (when (and (::api-middleware-defaults options)
-              (not (:formatter options))
-              (not (System/getProperty "compojure.api.middleware.global-default-formatter")))
-     (throw (ex-info (str "ERROR: Please set `:formatter :muuntaja` in the options map of `api-middleware.\n"
-                          "e.g., (api-middleware <handler> {:formatter :muuntaja})\n"
-                          "To prepare for backwards compatibility with compojure-api 1.x, the formatting library must be\n"
-                          "explicitly chosen if not configured by `:format` (ring-middleware-format) or\n"
-                          ":formats (muuntaja). Once 2.x is stable, the default will be `:formatter :ring-middleware-format`.\n"
-                          "To globally override the default formatter, use -Dcompojure.api.middleware.global-default-formatter=:muuntaja")
-                     {})))
-   (let [formatter (or (:formatter options)
-                       (when (or (contains? options :formats)
-                                 (= (System/getProperty "compojure.api.middleware.global-default-formatter")
-                                    ":muuntaja"))
-                         :muuntaja)
-                       (throw (ex-info (str "ERROR: Please set `:formatter :muuntaja` in the options map of `api-middleware.\n"
-                                            "e.g., (api-middleware <handler> {:formatter :muuntaja})\n"
-                                            "To prepare for backwards compatibility with compojure-api 1.x, the formatting library must be\n"
-                                            "explicitly chosen if not configured by `:format` (ring-middleware-format) or\n"
-                                            ":formats (muuntaja). Once 2.x is stable, the default will be `:formatter :ring-middleware-format`.\n"
-                                            "To globally override the default formatter, use -Dcompojure.api.middleware.global-default-formatter=:muuntaja")
-                                       {}))
-                       ;; TODO 2.x stable
-                       :ring-middleware-format)
-         _ (assert (= :muuntaja formatter)
-                   (str "Invalid :formatter: " (pr-str formatter) ". Must be :muuntaja."))
-         options (api-middleware-options options)
+   (let [options (api-middleware-options options)
          {:keys [exceptions components formats middleware ring-swagger coercion]} options
          muuntaja (create-muuntaja formats)]