cmd/dist: re-disable android test

Accidentally turned on in golang.org/cl/7734.

Change-Id: I8d72c279150a0b93732a2ac41b82fbb3cd7bf9d3
Reviewed-on: https://go-review.googlesource.com/7737Reviewed-by: Burcu Dogan <jbd@google.com>

src/cmd/dist/test.go

@@ -259,7 +259,7 @@ func (t *tester) registerTests() {
 		})
 	}
 
-	if t.hasBash() && t.cgoEnabled && t.goos != "darwin" {
+	if t.hasBash() && t.cgoEnabled && t.goos != "android" && t.goos != "darwin" {
 		t.registerTest("testgodefs", "../misc/cgo/testgodefs", "./test.bash")
 	}
 	if t.cgoEnabled {