Remove include/private/fs_config.h

This file is empty and should have no users including it.

Test: treehugger
Change-Id: I6c5a97dc42456d51c89762c93c6a744a69780843
diff --git a/include/private/fs_config.h b/include/private/fs_config.h
deleted file mode 100644
index e9868a4..0000000
--- a/include/private/fs_config.h
+++ /dev/null
@@ -1,4 +0,0 @@
-// TODO(b/63135587) remove this file after the transitive dependency
-// from private/android_filesystem_config.h is resolved. All files that use
-// libcutils/include/private/fs_config.h should include the file directly, not
-// indirectly via private/android_filesystem_config.h.