cmd/compile: delete the runtime_internal_atomic.go builtin defs file

The file was automatically placed in the cl by a tool I had built.
Since the compiler doesn't hook into the atomic package, it's unnecessary.

Change-Id: I631fd876813b381bb12604865b00fc5b268dce84
Reviewed-on: https://go-review.googlesource.com/16844
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

diff --git a/src/cmd/compile/internal/gc/builtin/runtime_internal_atomic.go b/src/cmd/compile/internal/gc/builtin/runtime_internal_atomic.go
deleted file mode 100644 (file)
index e31c574..0000000
--- a/src/cmd/compile/internal/gc/builtin/runtime_internal_atomic.go
+++ /dev/null
@@ -1,3 +0,0 @@
-// +build ignore
-
-package PACKAGE