relying on the glide caches (persisted and in memory) instead of our own

- this effectively halves the amount of image memory used by notifications

vector/src/main/java/im/vector/app/features/notifications/BitmapLoader.kt

@@ -28,11 +28,6 @@ import javax.inject.Singleton
 @Singleton
 class BitmapLoader @Inject constructor(private val context: Context) {
 
-    /**
-     * Avatar Url -> Bitmap
-     */
-    private val cache = HashMap<String, Bitmap?>()
-
     /**
      * Get icon of a room.
      * If already in cache, use it, else load it and call BitmapLoaderListener.onBitmapsLoaded() when ready
@@ -42,10 +37,7 @@ class BitmapLoader @Inject constructor(private val context: Context) {
         if (path == null) {
             return null
         }
-
-        return cache.getOrPut(path) {
-            loadRoomBitmap(path)
-        }
+        return loadRoomBitmap(path)
     }
 
     @WorkerThread

vector/src/main/java/im/vector/app/features/notifications/IconLoader.kt

@@ -30,11 +30,6 @@ import javax.inject.Singleton
 @Singleton
 class IconLoader @Inject constructor(private val context: Context) {
 
-    /**
-     * Avatar Url -> IconCompat
-     */
-    private val cache = HashMap<String, IconCompat?>()
-
     /**
      * Get icon of a user.
      * If already in cache, use it, else load it and call IconLoaderListener.onIconsLoaded() when ready
@@ -46,9 +41,7 @@ class IconLoader @Inject constructor(private val context: Context) {
             return null
         }
 
-        return cache.getOrPut(path) {
-            loadUserIcon(path)
-        }
+        return loadUserIcon(path)
     }
 
     @WorkerThread