Android.bp: Clean up qti_kernel_headers

qti_kernel_headers library is not applicable in split SI system and can
be cleaned up.

Change-Id: Ia521c6cd206f62f61e3faa224c84aafe00279e0d
Signed-off-by: Elliot Berman <eberman@codeaurora.org>

Android.bp

@@ -20,26 +20,3 @@ cc_prebuilt_binary {
     host_supported: true,
     srcs: [":gen-headers_install.sh"],
 }
-
-// Use the following for verbose output from kernel_headers.py.
-// kernel_headers_verbose = "--verbose "
-// Use the following for minimal output from kernel_headers.py.
-kernel_headers_verbose = ""
-
-build = ["gen_headers_arm.bp", "gen_headers_arm64.bp"]
-
-cc_library_headers {
-    name: "qti_kernel_headers",
-    arch: {
-        arm: {
-            generated_headers: ["qti_generate_kernel_headers_arm"],
-            export_generated_headers: ["qti_generate_kernel_headers_arm"],
-        },
-        arm64: {
-            generated_headers: ["qti_generate_kernel_headers_arm64"],
-            export_generated_headers: ["qti_generate_kernel_headers_arm64"],
-        },
-    },
-    vendor: true,
-    recovery_available: true,
-}