sdm660-common: Drop No Longer Necessary libbase Include Dir

It seems that soong is now solving exported headers for all modules
in shared_libs.

Signed-off-by: Aaradhay Vijay <inferno964.github@gmail.com>
Signed-off-by: pix106 <sbordenave@gmail.com>

init/Android.bp

@@ -1,5 +1,5 @@
 //
-// Copyright (C) 2019-2020 The LineageOS Project
+// Copyright (C) 2019-2020,2022 The LineageOS Project
 //
 // SPDX-License-Identifier: Apache-2.0
 //
@@ -9,7 +9,6 @@ cc_library_static {
     recovery_available: true,
     srcs: ["init_sdm660.cpp"],
     include_dirs: [
-        "system/libbase/include",
         "system/core/init",
     ],
     shared_libs: [