Remove obsolete arch-specific libclang_rt.builtins-* modules

I692cbfd7e24786cb6e214ba466f411cfc0b1cc97 switched to using
libclang_rt.builtins for all architectures, remove the obsolete libclang_rt.builtins-* modules from the allow list.

Test: builds
Change-Id: I1a9f70d8675fc015f326622b376a767e101c726d
diff --git a/build/allowed_deps.txt b/build/allowed_deps.txt
index d974652..334cb12 100644
--- a/build/allowed_deps.txt
+++ b/build/allowed_deps.txt
@@ -1033,10 +1033,6 @@
 prebuilt_libc_headers(minSdkVersion:(no version))
 prebuilt_libcap(minSdkVersion:(no version))
 prebuilt_libclang_rt.builtins(minSdkVersion:(no version))
-prebuilt_libclang_rt.builtins-aarch64-android(minSdkVersion:(no version))
-prebuilt_libclang_rt.builtins-arm-android(minSdkVersion:(no version))
-prebuilt_libclang_rt.builtins-i686-android(minSdkVersion:(no version))
-prebuilt_libclang_rt.builtins-x86_64-android(minSdkVersion:(no version))
 prebuilt_libclang_rt.ubsan_minimal(minSdkVersion:(no version))
 prebuilt_libnativehelper_header_only(minSdkVersion:(no version))
 prebuilt_libperfetto_client_experimental(minSdkVersion:(no version))