Revert "Clear suggestions once chip is submitted."

Causing b/30352337.

This reverts commit e424aeb19189215d646fb0098de97a1300951edd.

Change-Id: Ib9590fa17a2c91679b6c482390eca3a3cdd11409
diff --git a/src/com/android/ex/chips/RecipientEditTextView.java b/src/com/android/ex/chips/RecipientEditTextView.java
index f9b66d0..0099ff1 100644
--- a/src/com/android/ex/chips/RecipientEditTextView.java
+++ b/src/com/android/ex/chips/RecipientEditTextView.java
@@ -2058,11 +2058,6 @@
         }
         sanitizeBetween();
 
-        // Clear all the suggestions once an item is submitted.
-        if (getAdapter().getEntries() != null) {
-            getAdapter().getEntries().clear();
-        }
-
         return end - start;
     }