Remove `strong`.
diff --git a/pkgs/package_config/analysis_options.yaml b/pkgs/package_config/analysis_options.yaml
deleted file mode 100644
index a10d4c5..0000000
--- a/pkgs/package_config/analysis_options.yaml
+++ /dev/null
@@ -1,2 +0,0 @@
-analyzer:
-  strong-mode: true