remove deprecated annotation helper

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1552443003

TBR=

Review URL: https://codereview.chromium.org/1552443003

include/core/SkPaint.h

@@ -631,13 +631,6 @@ public:
     SkAnnotation* getAnnotation() const { return fAnnotation; }
     SkAnnotation* setAnnotation(SkAnnotation*);
 
-    /**
-     *  Returns true if there is an annotation installed on this paint, and
-     *  the annotation specifics no-drawing.
-     */
-    SK_ATTR_DEPRECATED("use getAnnotation and check for non-null")
-    bool isNoDrawAnnotation() const { return this->getAnnotation() != NULL; }
-
     /**
      *  Return the paint's SkDrawLooper (if any). Does not affect the looper's
      *  reference count.