Fixed test imports (removed /src imports)

Author: Bungeefan

test/logger_test.dart

@@ -1,7 +1,7 @@
 import 'dart:math';
 
-import 'package:test/test.dart';
 import 'package:logger/logger.dart';
+import 'package:test/test.dart';
 
 typedef PrinterCallback = List<String> Function(
   Level level,

test/printers/hybrid_printer_test.dart

@@ -1,14 +1,11 @@
-import 'package:logger/src/log_printer.dart';
-import 'package:logger/src/logger.dart';
-import 'package:logger/src/printers/simple_printer.dart';
+import 'package:logger/logger.dart';
 import 'package:test/test.dart';
 
-import 'package:logger/src/printers/hybrid_printer.dart';
-
 final realPrinter = SimplePrinter();
 
 class TestLogPrinter extends LogPrinter {
   LogEvent? latestEvent;
+
   @override
   List<String> log(LogEvent event) {
     latestEvent = event;

test/printers/prefix_printer_test.dart

@@ -1,7 +1,4 @@
-import 'package:logger/src/logger.dart';
-import 'package:logger/src/printers/prefix_printer.dart';
-import 'package:logger/src/printers/pretty_printer.dart';
-import 'package:logger/src/printers/simple_printer.dart';
+import 'package:logger/logger.dart';
 import 'package:test/test.dart';
 
 void main() {

test/printers/simple_printer_test.dart

@@ -1,5 +1,4 @@
-import 'package:logger/src/logger.dart';
-import 'package:logger/src/printers/simple_printer.dart';
+import 'package:logger/logger.dart';
 import 'package:test/test.dart';
 
 const ansiEscapeLiteral = '\x1B';