Remove unneeded SkPackedUnicharID

Change-Id: I85334081f3b114dc0855adcbee4156247fd457bb
Reviewed-on: https://skia-review.googlesource.com/c/191720
Auto-Submit: Herb Derby <herb@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>

src/core/SkGlyph.h

diff --git a/src/core/SkGlyph.h b/src/core/SkGlyph.h
index 03493bb..4e709b4 100644
--- a/src/core/SkGlyph.h
+++ b/src/core/SkGlyph.h
@@ -124,15 +124,6 @@
     }
 };
 
-struct SkPackedUnicharID : public SkPackedID {
-    SkPackedUnicharID(SkUnichar code) : SkPackedID(code) { }
-    SkPackedUnicharID(SkUnichar code, SkFixed x, SkFixed y) : SkPackedID(code, x, y) { }
-    constexpr SkPackedUnicharID() = default;
-    SkUnichar code() const {
-        return SkTo<SkUnichar>(SkPackedID::code());
-    }
-};
-
 class SkGlyph {
     struct PathData;