Remove support for remaining deprecated features.

sdk/lib/_internal/compiler/implementation/compiler.dart

Index: sdk/lib/_internal/compiler/implementation/compiler.dart
diff --git a/sdk/lib/_internal/compiler/implementation/compiler.dart b/sdk/lib/_internal/compiler/implementation/compiler.dart
index 86f5db8a6694bea5537badd7cf79ad520b404139..22dd08d3acfa347dba3ee410fea39e92d871b79b 100644
--- a/sdk/lib/_internal/compiler/implementation/compiler.dart
+++ b/sdk/lib/_internal/compiler/implementation/compiler.dart
@@ -295,8 +295,6 @@ abstract class Compiler implements DiagnosticListener {
    */
   final bool analyzeSignaturesOnly;
   final bool enableNativeLiveTypeAnalysis;
-  final bool rejectDeprecatedFeatures;
-  final bool checkDeprecationInSdk;
 
   /**
    * If [:true:], comment tokens are collected in [commentMap] during scanning.
@@ -500,8 +498,6 @@ abstract class Compiler implements DiagnosticListener {
             this.analyzeAllFlag: false,
             bool analyzeOnly: false,
             bool analyzeSignaturesOnly: false,
-            this.rejectDeprecatedFeatures: false,
-            this.checkDeprecationInSdk: false,
             this.preserveComments: false,
             this.verbose: false,
             this.sourceMapUri: null,
@@ -1192,24 +1188,6 @@ abstract class Compiler implements DiagnosticListener {
     reportDiagnostic(span, "$message", kind);
   }
 
-  /// Returns true if a diagnostic was emitted.
-  bool onDeprecatedFeature(Spannable span, String feature) {
-    if (currentElement == null)
-      throw new SpannableAssertionFailure(span, feature);
-    if (!checkDeprecationInSdk &&
-        currentElement.getLibrary().isPlatformLibrary) {
-      return false;
-    }
-    var kind = rejectDeprecatedFeatures
-        ? api.Diagnostic.ERROR : api.Diagnostic.WARNING;
-    var message = rejectDeprecatedFeatures
-        ? MessageKind.DEPRECATED_FEATURE_ERROR.error({'featureName': feature})
-        : MessageKind.DEPRECATED_FEATURE_WARNING.error(
-            {'featureName': feature});
-    reportMessage(spanFromSpannable(span), message, kind);
-    return true;
-  }
-
   void reportDiagnostic(SourceSpan span, String message, api.Diagnostic kind);
 
   SourceSpan spanFromTokens(Token begin, Token end, [Uri uri]) {