Revert^2 "Promote ExtraText lint warning to an error""

This reverts commit 0b29c62498f3174283b003515a26285c4f26e5b5.

Reason for revert: Issue that caused breakage has been fixed on stage-aosp-master. I'll test this cl on go/abtd for the stage-aosp-master branch before submitting.

Change-Id: I90f1941f67ebf9c40402713fa7762a99e368c17f
diff --git a/java/lint_defaults.txt b/java/lint_defaults.txt
index e99cb05..01e7e6e 100644
--- a/java/lint_defaults.txt
+++ b/java/lint_defaults.txt
@@ -101,7 +101,6 @@
 --warning_check WrongViewCast                      # 1 occurences in 1 modules
 
 --warning_check CoarseFineLocation
---warning_check ExtraText
 --warning_check IntentFilterExportedReceiver
 --warning_check MissingInflatedId
 --warning_check NotificationPermission