Remove sk_throw.

This macro is now an alias for SK_ABORT and appears to no longer be
used. Removing to clean up SkTypes.h a bit.

Change-Id: If2246f2bf5bab47dbb0b79dd8ebd29766ea0bc5e
Reviewed-on: https://skia-review.googlesource.com/35822
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
diff --git a/include/core/SkTypes.h b/include/core/SkTypes.h
index b1ba0c5..902858a 100644
--- a/include/core/SkTypes.h
+++ b/include/core/SkTypes.h
@@ -110,9 +110,6 @@
     #define SkAssertResult(cond)         if (cond) {} do {} while(false)
 #endif
 
-// Legacy macro names for SK_ABORT
-#define sk_throw()                      SK_ABORT("sk_throw")
-
 #ifdef SK_IGNORE_TO_STRING
     #define SK_TO_STRING_NONVIRT()
     #define SK_TO_STRING_VIRT()