Revert "Add constant to track the number of emergency contacts set Test: This CL requires no tests"

This reverts commit c7ded40e566be6849a980e2b0dad1c698cbe0848.

Change-Id: I169f57704623c6ac79c45d7f1666fa5f8a840522
diff --git a/proto/src/metrics_constants.proto b/proto/src/metrics_constants.proto
index 6b81f96..e8d9b70 100644
--- a/proto/src/metrics_constants.proto
+++ b/proto/src/metrics_constants.proto
@@ -3897,15 +3897,6 @@
     // OS: O
     APPLICATIONS_STORAGE_MOVIES = 931;
 
-    // ACTION: Counts the number of emergency contacts
-    // Value 0: No contacts
-    // Value 1: One emergency contact set
-    // Value 2: Two emergency contacts set
-    // Value 3: Three or more emergency contacts set
-    // CATEGORY: SETTINGS
-    // OS: O
-    ACTION_NUMBER_EMERGENCY_CONTACTS = 932;
-
     // ---- End O Constants, all O constants go above this line ----
 
     // Add new aosp constants above this line.