C++: Remove workaround for crashing if parsing invalid code

This reverts the changes

    commit beac7b9539
    C++: Fix highlighting after "invalid code"

    commit 78ab287fc6
    C++: Stop parsing a declaration after two tries

which were a work around for QTCREATORBUG-12890.

A follow-up patch provides a proper fix.

Task-number: QTCREATORBUG-12890
Change-Id: I2650a8e41c8ff1180cad9f069e463fc51bd2f1b1
Reviewed-by: Erik Verbruggen <erik.verbruggen@theqtcompany.com>

src/libs/3rdparty/cplusplus/Parser.h

@@ -33,7 +33,7 @@ namespace CPlusPlus {
 class CPLUSPLUS_EXPORT Parser
 {
 public:
-    Parser(TranslationUnit *translationUnit, int retryParseDeclarationLimit);
+    Parser(TranslationUnit *translationUnit);
     ~Parser();
 
     bool parseTranslationUnit(TranslationUnitAST *&node);
@@ -254,7 +254,6 @@ public:
     bool parseDesignator(DesignatorAST *&node);
 
     bool skipUntil(int token);
-    void skipUntilAfterSemicolonOrRightBrace();
     void skipUntilDeclaration();
     bool skipUntilStatement();
     bool skip(int l, int r);
@@ -317,7 +316,6 @@ private:
     MemoryPool *_pool;
     LanguageFeatures _languageFeatures;
     unsigned _tokenIndex;
-    int _retryParseDeclarationLimit;
     bool _templateArguments: 1;
     bool _inFunctionBody: 1;
     bool _inExpressionStatement: 1;