Fix sqlparser analysis warnings

Author: simolus3

sqlparser/lib/src/engine/module/fts5.dart

@@ -1,5 +1,4 @@
 import 'package:sqlparser/sqlparser.dart';
-import 'package:sqlparser/src/analysis/types/types.dart';
 
 class Fts5Extension implements Extension {
   const Fts5Extension();

sqlparser/lib/src/engine/sql_engine.dart

@@ -1,7 +1,6 @@
 import 'dart:collection';
 
 import 'package:sqlparser/sqlparser.dart';
-import 'package:sqlparser/src/analysis/types/types.dart';
 import 'package:sqlparser/src/reader/parser.dart';
 import 'package:sqlparser/src/reader/tokenizer/scanner.dart';
 

sqlparser/test/analysis/types2/graph_test.dart

@@ -1,5 +1,4 @@
 import 'package:sqlparser/sqlparser.dart';
-import 'package:sqlparser/src/analysis/types/types.dart';
 import 'package:test/test.dart';
 
 class _FakeTypeable implements Typeable {}

sqlparser/test/analysis/types2/resolver_test.dart

@@ -1,5 +1,4 @@
 import 'package:sqlparser/sqlparser.dart';
-import 'package:sqlparser/src/analysis/types/types.dart';
 import 'package:test/test.dart';
 
 import '../data.dart';