[flutter_plugin_tools] Remove an unnecessary logging message (#4320)

diff --git a/script/tool/lib/src/publish_plugin_command.dart b/script/tool/lib/src/publish_plugin_command.dart
index 769b9e8..4fdecf6 100644
--- a/script/tool/lib/src/publish_plugin_command.dart
+++ b/script/tool/lib/src/publish_plugin_command.dart
@@ -433,7 +433,6 @@
   // https://github.com/dart-lang/pub/blob/d99b0d58f4059d7bb4ac4616fd3d54ec00a2b5d4/lib/src/system_cache.dart#L34-L43
   String? cacheDir;
   final String? pubCache = io.Platform.environment['PUB_CACHE'];
-  print(pubCache);
   if (pubCache != null) {
     cacheDir = pubCache;
   } else if (io.Platform.isWindows) {