Removing useless import of arm.gni

Bug: None
Change-Id: I2915890f72051e1d4f042735f952d36bda6a4141
Reviewed-on: https://webrtc-review.googlesource.com/87382
Reviewed-by: Alessio Bazzica <alessiob@webrtc.org>
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23862}
diff --git a/modules/audio_processing/BUILD.gn b/modules/audio_processing/BUILD.gn
index f717411..3efa065 100644
--- a/modules/audio_processing/BUILD.gn
+++ b/modules/audio_processing/BUILD.gn
@@ -6,7 +6,6 @@
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
-import("//build/config/arm.gni")
 import("../../webrtc.gni")
 if (!build_with_mozilla) {
   import("//third_party/protobuf/proto_library.gni")
diff --git a/modules/audio_processing/aec3/BUILD.gn b/modules/audio_processing/aec3/BUILD.gn
index 75d890d..d4980d7e 100644
--- a/modules/audio_processing/aec3/BUILD.gn
+++ b/modules/audio_processing/aec3/BUILD.gn
@@ -6,7 +6,6 @@
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
-import("//build/config/arm.gni")
 import("../../../webrtc.gni")
 
 rtc_static_library("aec3") {