Remove psalm step from CI workflow

Removed psalm check from CI workflow.

Author: dereuromark

.github/workflows/ci.yml

@@ -131,10 +131,6 @@ jobs:
     - name: Run phpcs
       run: vendor/bin/phpcs --report=checkstyle | cs2pr
 
-    - name: Run psalm
-      if: success() || failure()
-      run: vendor/bin/psalm.phar --output-format=github
-
     - name: Run phpstan
       if: success() || failure()
       run: vendor/bin/phpstan analyse