Remove deprecated code

pkg/analyzer/lib/src/generated/parser.dart

Index: pkg/analyzer/lib/src/generated/parser.dart
diff --git a/pkg/analyzer/lib/src/generated/parser.dart b/pkg/analyzer/lib/src/generated/parser.dart
index 07e31c1ba9111d7464fe4602647261df6d2322d9..9c193e999f4d8c3625e042100b91c5db8005e65e 100644
--- a/pkg/analyzer/lib/src/generated/parser.dart
+++ b/pkg/analyzer/lib/src/generated/parser.dart
@@ -2187,30 +2187,6 @@ class Parser {
   }
 
   /**
-   * Set whether the parser is to parse the async support.
-   */
-  @deprecated
-  void set parseAsync(bool parseAsync) {
-    // Async support cannot be disabled
-  }
-
-  /**
-   * Set whether the parser is to parse deferred libraries.
-   */
-  @deprecated
-  void set parseDeferredLibraries(bool parseDeferredLibraries) {
-    // Deferred libraries support cannot be disabled
-  }
-
-  /**
-   * Set whether the parser is to parse enum declarations.
-   */
-  @deprecated
-  void set parseEnum(bool parseEnum) {
-    // Enum support cannot be disabled
-  }
-
-  /**
    * Set whether parser is to parse function bodies.
    */
   void set parseFunctionBodies(bool parseFunctionBodies) {