Drop dbal dependency, not needed

Author: isaac-souza

composer.json

@@ -21,8 +21,7 @@
     "minimum-stability": "dev",
     "prefer-stable": true,
     "require": {
-        "php": "^7.0|^8.0",
-        "doctrine/dbal": "^3.7"
+        "php": "^7.0|^8.0"
     },
     "autoload": {
         "psr-4": {