drop unused sh_test targets

cluster/BUILD

@@ -35,20 +35,3 @@ pkg_tar(
         "//cluster/gce/manifests:gce-master-manifests",
     ],
 )
-
-# These tests just verify that bash can interpret the file.
-sh_test(
-    name = "common_test",
-    srcs = ["common.sh"],
-    deps = [
-        "//hack/lib",
-    ],
-)
-
-sh_test(
-    name = "kube-util_test",
-    srcs = ["kube-util.sh"],
-    deps = [
-        "//hack/lib",
-    ],
-)