remove extra crap from manifest

still not launching, thought this might have been why. nope

Signed-off-by: William Casarin <jb55@jb55.com>

crates/notedeck_chrome/android/app/src/main/AndroidManifest.xml

@@ -22,11 +22,6 @@
         </activity>
     </application>
 
-[[package.metadata.android.uses_feature]]
-name = "android.hardware.vulkan.level"
-required = true
-version = 1
-
     <uses-feature android:name="android.hardware.vulkan.level"
                   android:required="true"
                   android:version="1" />

shell.nix

@@ -55,7 +55,7 @@ mkShell ({
         cmdline-tools-latest
         build-tools-34-0-0
         platform-tools
-        platforms-android-30
+        platforms-android-31
         ndk-27-2-12479018
         #ndk-24-0-8215888
       ] ++ lib.optional android_emulator [ emulator ]);