Remove selective builds (#1639)

Selective builds breaks my ability to require that checks pass before
merging. It's not worth the bite for very few docs-only PRs, given
github limitations on needing to skip INDIVIDUAL JOB STEPS on required
CI jobs.

Maybe we should move to gitlab 💀

.github/workflows/photonvision-docs.yml

@@ -3,14 +3,8 @@ name: PhotonVision Sphinx Documentation Checks
 on:
   push:
     branches: [ master ]
-    paths:
-      - 'docs/**'
-      - '.github/**'
   pull_request:
     branches: [ master ]
-    paths:
-      - 'docs/**'
-      - '.github/**'
   merge_group:
 
 env: