Clean up slice from spa and move androidx.slice dependency to Settings.

Test: build successfully
Flag: EXEMPT clean up
Bug: 352442832
Change-Id: Ifc222a91991d4924f1cb7b5c1e7fd90968bfed26
diff --git a/Android.bp b/Android.bp
index 0fd4cb0..4c472c8 100644
--- a/Android.bp
+++ b/Android.bp
@@ -68,6 +68,9 @@
     static_libs: [
         // External dependencies
         "androidx.navigation_navigation-fragment-ktx",
+        "androidx.slice_slice-builders",
+        "androidx.slice_slice-core",
+        "androidx.slice_slice-view",
         "androidx.window_window-java",
         "gson",
         "guava",