removed obsolete dependencies

plugins/dbgate-plugin-postgres/package.json

@@ -35,7 +35,6 @@
     "dbgate-tools": "^4.1.1",
     "lodash": "^4.17.21",
     "pg": "^7.17.0",
-    "sql-query-identifier": "^2.1.0",
     "webpack": "^4.42.0",
     "webpack-cli": "^3.3.11"
   }

plugins/dbgate-plugin-postgres/src/backend/drivers.js

@@ -1,6 +1,5 @@
 const _ = require('lodash');
 const stream = require('stream');
-const { identify } = require('sql-query-identifier');
 
 const driverBases = require('../frontend/drivers');
 const Analyser = require('./Analyser');