Clean up export of lib/packages:build_type as it is no longer necessary.

PiperOrigin-RevId: 304006641
diff --git a/src/main/java/com/google/devtools/build/lib/packages/BUILD b/src/main/java/com/google/devtools/build/lib/packages/BUILD
index cfcc726..5c9b135 100644
--- a/src/main/java/com/google/devtools/build/lib/packages/BUILD
+++ b/src/main/java/com/google/devtools/build/lib/packages/BUILD
@@ -30,10 +30,6 @@
             "StarlarkSemanticsOptions.java",
         ],
     ),
-    # TODO(katre): Remove this when all dependencies are updated.
-    exports = [
-        ":build_type",
-    ],
     deps = [
         ":build_type",
         ":type",