Delete .test_config

No longer used
diff --git a/pkgs/pub_semver/.test_config b/pkgs/pub_semver/.test_config
deleted file mode 100644
index 2535563..0000000
--- a/pkgs/pub_semver/.test_config
+++ /dev/null
@@ -1,3 +0,0 @@
-{
-  "test_package": true
-}