Remove outdated know issues (#572)

Author: SUPERCILEX

storage/README.md

@@ -15,48 +15,23 @@ benefits while leveraging Firebase Storage's authenticated storage capabilities.
 To load an image from a `StorageReference`, simply use the `FirebaseImageLoader` class:
 
 ```java
-    // Reference to an image file in Firebase Storage
-    StorageReference storageReference = ...;
+// Reference to an image file in Firebase Storage
+StorageReference storageReference = ...;
 
-    // ImageView in your Activity
-    ImageView imageView = ...;
+// ImageView in your Activity
+ImageView imageView = ...;
 
-    // Load the image using Glide
-    Glide.with(this /* context */)
-            .using(new FirebaseImageLoader())
-            .load(storageReference)
-            .into(imageView);
+// Load the image using Glide
+Glide.with(this /* context */)
+        .using(new FirebaseImageLoader())
+        .load(storageReference)
+        .into(imageView);
 ```
 
 Images displayed using `FirebaseImageLoader` are cached by their path in Firebase Storage, so
 repeated loads will be fast and conserve bandwidth. For more information on caching in Glide,
 see [this guide][glide-caching].
 
-## Known Issues
-
-There is a bug in `com.google.firebase:firebase-storage:9.6.1` and earlier that results in
-excessive logging when downloading images. You may see messages in your logs like this:
-
-```
-W/StorageTask: unable to change internal state to: INTERNAL_STATE_IN_PROGRESS isUser: false from state:INTERNAL_STATE_SUCCESS
-```
-
-In production this could slow your app down if you are downloading many images. The suggested
-workaround is to disable logging in production by adding the following lines to your
-ProGuard configuration (`proguard-rules.pro`):
-
-```
--assumenosideeffects class android.util.Log {
-    public static int w(...);
-    public static int d(...);
-    public static int v(...);
-}
-```
-
-This will disable calls to `Log.w()`, `Log.d()`, and `Log.v()` but preserve log calls at the
-`INFO` and `ERROR` levels. Note that this will only be effective when using
-`proguard-android-optimize.txt` as the default ProGuard file in `build.gradle`.
-
 [firebase-storage]: https://firebase.google.com/docs/storage/
 [glide]: https://github.com/bumptech/glide
 [storage-reference]: https://firebase.google.com/docs/reference/android/com/google/firebase/storage/StorageReference