Couldn't delete Packages/com.unity.analytics/CHANGELOG.md because it's in an immutable folder.
please help me
Comment
I'm having the same issue with Packages/com.unity.xr.windowsmr.metro/Documentation after I removed the Windows$$anonymous$$R package. Seems like it must be a bug in the package manager. The good news is other than the warning it doesn't seem to affect the build.
If you export your scene and import into a fresh project, it'll only include assets/packages that are actually needed. This might clean up a project with issues like this.