DO NOT MERGE: Revert "Add VanillaIceCream to android.os.Build"

Revert V changes in U branches. V changes are needed to help
resolve merge conflicts as this topic lands in downstream
branches.

Bug: 275409981
Test: N/A

This reverts commit c7ffdf8bd6.

Change-Id: I9422db9c0d980468b7f4678fe06866d06c8c7c31

core/api/current.txt

@@ -32654,7 +32654,6 @@ package android.os {
     field public static final int S_V2 = 32; // 0x20
     field public static final int TIRAMISU = 33; // 0x21
     field public static final int UPSIDE_DOWN_CAKE = 34; // 0x22
-    field public static final int VANILLA_ICE_CREAM = 10000; // 0x2710
   }
 
   public final class Bundle extends android.os.BaseBundle implements java.lang.Cloneable android.os.Parcelable {

core/java/android/os/Build.java

@@ -1223,11 +1223,6 @@ public class Build {
          * Upside Down Cake.
          */
         public static final int UPSIDE_DOWN_CAKE = 34;
-
-        /**
-         * Vanilla Ice Cream.
-         */
-        public static final int VANILLA_ICE_CREAM = CUR_DEVELOPMENT;
     }
 
     /** The type of build, like "user" or "eng". */