chore: Remove semantic branch name and target branch checks

Remove pr-branch-check-name and pr-branch-target-gitflow checks,
keeping only the PR title check.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: rmi22186

.github/workflows/reusable-workflows.yml

@@ -4,12 +4,6 @@ on:
   pull_request:
 
 jobs:
-  pr-branch-check-name:
-    name: Check PR for semantic branch name
-    uses: mParticle/mparticle-workflows/.github/workflows/pr-branch-check-name.yml@stable
   pr-title-check:
     name: Check PR for semantic title
     uses: mParticle/mparticle-workflows/.github/workflows/pr-title-check.yml@stable
-  pr-branch-target-gitflow:
-    name: Check PR for semantic target branch
-    uses: mParticle/mparticle-workflows/.github/workflows/pr-branch-target-gitflow.yml@stable