Cleans up warnings in dartc code base

compiler/java/com/google/dart/compiler/parser/DartParser.java

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 package com.google.dart.compiler.parser;
 
 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.io.CharStreams;
 import com.google.dart.compiler.DartCompilationError;
 import com.google.dart.compiler.DartCompilerListener;
@@ skipping 3579 matching lines @@
     return new DartSyntheticErrorStatement(buf.toString());
   }
 
 
   /**
    * Look for a statement terminator, giving error messages and consuming tokens
    * for error recovery.
    */
   protected void expectStatmentTerminator() {
     Token token = peek(0);
-    int braceCount = 1;
     if (expect(Token.SEMICOLON)) {
       return;
     }
     Set<Token> terminals = collectTerminalAnnotations();
     assert(terminals.contains(Token.SEMICOLON));
 
-    switch (token) {
-      case LBRACE:
-        braceCount++;
-      break;
-    }
     if (peek(0) == token) {
       reportErrorWithoutAdvancing(ParserErrorCode.EXPECTED_SEMICOLON);
     } else {
       reportError(position(), ParserErrorCode.EXPECTED_SEMICOLON);
       token = peek(0);
     }
 
     // Consume tokens until we see something that could terminate or start a new statement
     while (token != Token.SEMICOLON) {
       if (looksLikeTopLevelKeyword() || terminals.contains(token)) {
@@ skipping 581 matching lines @@
   }
 
   private void reportError(DartNode node, ErrorCode errorCode, Object... arguments) {
     reportError(new DartCompilationError(node, errorCode, arguments));
   }
 
   private boolean currentlyParsingToplevel() {
     return   !(isParsingInterface || isTopLevelAbstract || isParsingClass);
   }
 }