Remove custom extensions from flicker.

Remove custom extensions jar from flicker.
Use common extensions for flicker. Having conflicting jars causes the
IDE to not work correctly.

Bug: 327624029
Test: atest FlickerTestsOther:HorizontalSplitChangeRatioTest
Change-Id: I693bd2e7cfbd51945ac1afc58e21ac653275ced5
diff --git a/tests/FlickerTests/Android.bp b/tests/FlickerTests/Android.bp
index 1d71f95..d658d59 100644
--- a/tests/FlickerTests/Android.bp
+++ b/tests/FlickerTests/Android.bp
@@ -63,17 +63,20 @@
     ],
 }
 
-android_library_import {
-    name: "wm-flicker-window-extensions_nodeps",
-    aars: ["libs/window-extensions-release.aar"],
-    sdk_version: "current",
-}
-
 java_library {
     name: "wm-flicker-window-extensions",
     sdk_version: "current",
     static_libs: [
-        "wm-flicker-window-extensions_nodeps",
+        "androidx.window.extensions_extensions-nodeps",
+    ],
+    installable: false,
+}
+
+java_library {
+    name: "wm-flicker-window-extensions-core",
+    sdk_version: "current",
+    static_libs: [
+        "androidx.window.extensions.core_core-nodeps",
     ],
     installable: false,
 }
diff --git a/tests/FlickerTests/libs/window-extensions-release.aar b/tests/FlickerTests/libs/window-extensions-release.aar
deleted file mode 100644
index 918e514..0000000
--- a/tests/FlickerTests/libs/window-extensions-release.aar
+++ /dev/null
Binary files differ