compute: remove go.mod

This was overly hasty and needs a lot more consideration.

This is a breaking change, but since there is no parent-level go.mod
and since this was never tagged, it should be acceptable.

Change-Id: I9b4077b46dfdf253bf1e987008ca1305b9041793
Reviewed-on: https://code-review.googlesource.com/c/35630
Reviewed-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Eno Compton <enocom@google.com>
diff --git a/compute/metadata/go.mod b/compute/metadata/go.mod
deleted file mode 100644
index c350d0e..0000000
--- a/compute/metadata/go.mod
+++ /dev/null
@@ -1 +0,0 @@
-module cloud.google.com/go/compute/metadata
diff --git a/compute/metadata/go.sum b/compute/metadata/go.sum
deleted file mode 100644
index e69de29..0000000
--- a/compute/metadata/go.sum
+++ /dev/null