Remove stray semicolons.

Turns out function declarations don't end in semicolons...

BUG=skia:

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2720

No public API changes.
TBR=reed@google.com

Change-Id: I72b56d52e1ff7fa6e89c295b0de8c46599791ebb
Reviewed-on: https://skia-review.googlesource.com/2720
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
diff --git a/src/gpu/batches/GrAnalyticRectBatch.cpp b/src/gpu/batches/GrAnalyticRectBatch.cpp
index 8c0f419..311c652 100644
--- a/src/gpu/batches/GrAnalyticRectBatch.cpp
+++ b/src/gpu/batches/GrAnalyticRectBatch.cpp
@@ -63,7 +63,7 @@
         fInWidthHeight = &this->addVertexAttrib("inWidthHeight", kVec2f_GrVertexAttribType);
     }
 
-    bool implementsDistanceVector() const override { return true; };
+    bool implementsDistanceVector() const override { return true; }
 
     const Attribute* inPosition()    const { return fInPosition; }
     const Attribute* inColor()       const { return fInColor; }