remove (unused) duplicate field of fUniqueID

Change-Id: I0e9fe683950ec4905a8bdaa2e965f7bc0287b91a
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/295918
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Mike Reed <reed@google.com>

src/image/SkImage_Lazy.cpp

@@ -128,7 +128,6 @@ SkImage_Lazy::SkImage_Lazy(Validator* validator)
         , fSharedGenerator(std::move(validator->fSharedGenerator))
         , fOrigin(validator->fOrigin) {
     SkASSERT(fSharedGenerator);
-    fUniqueID = validator->fUniqueID;
 }
 
 

src/image/SkImage_Lazy.h

@@ -82,8 +82,6 @@ private:
     sk_sp<SharedGenerator> fSharedGenerator;
     const SkIPoint         fOrigin;
 
-    uint32_t fUniqueID;
-
     // Repeated calls to onMakeColorTypeAndColorSpace will result in a proliferation of unique IDs
     // and SkImage_Lazy instances. Cache the result of the last successful call.
     mutable SkMutex             fOnMakeColorTypeAndSpaceMutex;