Remove CQ for unsupported branch chrome/m93

Change-Id: I883edd43d4d4cb8911361b4673012f5dc0ba904f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/468341
Reviewed-by: Eric Boren <borenet@google.com>

infra/skcq.json

diff --git a/infra/skcq.json b/infra/skcq.json
deleted file mode 100644
index aa671740..0000000
--- a/infra/skcq.json
+++ /dev/null
@@ -1,7 +0,0 @@
-{
-  "visibility_type": "public",
-  "tasks_json_path": "infra/bots/tasks.json",
-  "committer_list": "project-skia-committers",
-  "dry_run_access_list": "project-skia-tryjob-access",
-  "tree_status_url": "https://tree-status.skia.org/current"
-}