Revert "Trigger builds when new tags are pushed"

This reverts commit 083ace1.

The intention was to allow tagging a release and then `git describe`
would pick up the new tag name, but unfortunately that doesn't work:
actions/checkout#290

Instead re-running a trunk build is the only way. So, there's no point
letting tags trigger builds.

.github/workflows/touchHLE_release.yml

@@ -3,8 +3,6 @@ name: Build touchHLE
 on:
   push:
     branches: [ "trunk" ]
-    tags:
-      - '*'
   pull_request:
     branches: [ "trunk" ]