ci: cleaning up the codeql workflow

.github/workflows/codeql-analysis.yml

@@ -1,4 +1,4 @@
-name: "Code scanning - action"
+name: "CodeQL"
 
 on:
   push:
@@ -7,24 +7,14 @@ on:
     - cron: '0 12 * * 1'
 
 jobs:
-  CodeQL-Build:
+  analyze:
 
     runs-on: ubuntu-latest
 
     steps:
     - name: Checkout repository
       uses: actions/checkout@v2.3.4
-      with:
-        # We must fetch at least the immediate parents so that if this is
-        # a pull request then we can checkout the head.
-        fetch-depth: 2
-
-    # If this run was triggered by a pull request event, then checkout
-    # the head of the pull request instead of the merge commit.
-    - run: git checkout HEAD^2
-      if: ${{ github.event_name == 'pull_request' }}
 
-    # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
       uses: github/codeql-action/init@v1
       with: