build: remove prestissimo (useless in composer v2)

Author: iBotPeaches

.github/workflows/formats.yml

@@ -31,7 +31,6 @@ jobs:
       with:
         php-version: ${{ matrix.php }}
         extensions: dom, mbstring, zip
-        tools: prestissimo
         coverage: pcov
 
     - name: Install Composer dependencies