revert RenderTexture.

Author: jtwigg

cocos2d/CCRenderTexture.m

@@ -618,16 +618,11 @@ -(void) setContentSize:(CGSize)size
     // TODO: Fix CCRenderTexture so that it correctly handles this
 	// NSAssert(NO, @"You cannot change the content size of an already created CCRenderTexture. Recreate it");
     [super setContentSize:size];
+	_projection = GLKMatrix4MakeOrtho(0.0f, size.width, 0.0f, size.height, -1024.0f, 1024.0f);
     _contentSizeChanged = YES;
 
 }
 
--(void)setContentSizeType:(CCSizeType)contentSizeType
-{
-	[super setContentSizeType:contentSizeType];
-	_contentSizeChanged = YES;
-}
-
 
 
 @end