Remove -Xep:EqualsNull:WARN am: 7ef30d4799 am: b410698cf0 am: c62602cb8f

Original change: https://android-review.googlesource.com/c/platform/external/error_prone/+/1995752

Change-Id: I25e416e8949e5e48f271038d5bb35ab2b6848a56