[apex] remove module com.android.incremental

No need for the sepolicy file.

Test: builds
Change-Id: I604e3354e762e87f9239eeb321c60193a39f1687
diff --git a/apex/com.android.incremental-file_contexts b/apex/com.android.incremental-file_contexts
deleted file mode 100644
index f6b21da..0000000
--- a/apex/com.android.incremental-file_contexts
+++ /dev/null
@@ -1,2 +0,0 @@
-(/.*)?                u:object_r:system_file:s0
-/lib(64)?(/.*)        u:object_r:system_lib_file:s0