Remove custom brakeman config, now using default

I activated the default Brakeman config via Github security settings.

.github/workflows/brakeman-analysis.yml

@@ -1,51 +0,0 @@
-# This workflow integrates Brakeman with GitHub's Code Scanning feature
-# Brakeman is a static analysis security vulnerability scanner for Ruby on Rails applications
-
-name: Brakeman Scan
-
-# This section configures the trigger for the workflow. Feel free to customize depending on your convention
-on:
-  push:
-    branches: [ "master" ]
-  pull_request:
-    branches: [ "master" ]
-
-permissions:
-  contents: read
-
-jobs:
-  brakeman-scan:
-    permissions:
-      contents: read  # for actions/checkout to fetch code
-      security-events: write  # for github/codeql-action/upload-sarif to upload SARIF results
-    name: Brakeman Scan
-    runs-on: ubuntu-latest
-    steps:
-    # Checkout the repository to the GitHub Actions runner
-    - name: Checkout
-      uses: actions/checkout@v3
-
-    # Customize the ruby version depending on your needs
-    - name: Setup Ruby
-      uses: ruby/setup-ruby@v1
-      with:
-        ruby-version: '2.7'
-
-    - name: Setup Brakeman
-      env:
-        BRAKEMAN_VERSION: '5.4.0'
-      run: |
-        gem install brakeman --version $BRAKEMAN_VERSION
-
-    # Execute Brakeman CLI and generate a SARIF output with the security issues identified during the analysis
-    - name: Scan
-      continue-on-error: true
-      run: |
-        git show --no-patch # the commit being tested (which is often a merge due to actions/checkout@v3)
-        brakeman -f sarif -o output.sarif.json .
-
-    # Upload the SARIF file generated in the previous step
-    - name: Upload SARIF
-      uses: github/codeql-action/upload-sarif@v2
-      with:
-        sarif_file: output.sarif.json