Remove -march flags

This is no longer necessary with
https://github.com/pytorch/cpuinfo/pull/117.

Test: presubmit
Bug: 241223710
Change-Id: I33181c589766b7bc1818eab42d400b8172e1e2fe
diff --git a/Android.bp b/Android.bp
index 5fea3af..010bf1d 100644
--- a/Android.bp
+++ b/Android.bp
@@ -79,11 +79,7 @@
             srcs: cpuinfo_arm_common_src_files + [
                 "src/arm/linux/aarch32-isa.c",
             ],
-            cflags: [
-                "-mcpu=generic",
-                "-march=armv7-a",
-            ],
-        },
+       },
         arm64: {
             srcs: cpuinfo_arm_common_src_files + [
                 "src/arm/linux/aarch64-isa.c",