Revert of [modules] Properly initialize declared variables.

src/parsing/parser.h

Index: src/parsing/parser.h
diff --git a/src/parsing/parser.h b/src/parsing/parser.h
index fceaa2ff3579b72233d966ba76f33d03b7725787..86680e1683d713dcb112b0cafe99cdc7cd1723f6 100644
--- a/src/parsing/parser.h
+++ b/src/parsing/parser.h
@@ -215,8 +215,6 @@
   Variable* NewTemporary(const AstRawString* name) {
     return scope()->NewTemporary(name);
   }
-
-  void PrepareGeneratorVariables(FunctionState* function_state);
 
   // Limit the allowed number of local variables in a function. The hard limit
   // is that offsets computed by FullCodeGenerator::StackOperand and similar
@@ -577,7 +575,6 @@
   friend class InitializerRewriter;
   void RewriteParameterInitializer(Expression* expr, Scope* scope);
 
-  Expression* BuildInitialYield(int pos, FunctionKind kind);
   Expression* BuildCreateJSGeneratorObject(int pos, FunctionKind kind);
   Expression* BuildResolvePromise(Expression* value, int pos);
   Expression* BuildRejectPromise(Expression* value, int pos);