Remove leftover LINEAGE_ICON_CACHE_SERVICE

Change-Id: Ia05cb10c51526b76387b563f226a4ec08e720995
diff --git a/sdk/src/java/lineageos/app/LineageContextConstants.java b/sdk/src/java/lineageos/app/LineageContextConstants.java
index 175b500..e89cff0 100644
--- a/sdk/src/java/lineageos/app/LineageContextConstants.java
+++ b/sdk/src/java/lineageos/app/LineageContextConstants.java
@@ -64,13 +64,6 @@
     public static final String LINEAGE_PERFORMANCE_SERVICE = "lineageperformance";
 
     /**
-     * Manages composed icons
-     *
-     * @hide
-     */
-    public static final String LINEAGE_ICON_CACHE_SERVICE = "lineageiconcache";
-
-    /**
      * Manages display color adjustments
      *
      * @hide