libm/libc: remove 'allow_untyped_symbols' flags

Those flags were used to suppress ABI tidy errors, but by now are not in
use anymore and can safely be removed.

Bug: 156513478
Change-Id: Ibc9625d139f933e48ebb4ddebe70d424f6231f3f
Signed-off-by: Matthias Maennich <maennich@google.com>
diff --git a/libc/Android.bp b/libc/Android.bp
index aa555a1..fe263fd 100644
--- a/libc/Android.bp
+++ b/libc/Android.bp
@@ -2487,8 +2487,6 @@
     name: "libc",
     symbol_file: "libc.map.txt",
     first_version: "9",
-    // APIs implemented in asm don't have debug info: http://b/190554910.
-    allow_untyped_symbols: true,
     export_header_libs: [
         "common_libc",
         "libc_uapi",
diff --git a/libm/Android.bp b/libm/Android.bp
index bfb7a8c..a89885f 100644
--- a/libm/Android.bp
+++ b/libm/Android.bp
@@ -466,8 +466,6 @@
     name: "libm",
     symbol_file: "libm.map.txt",
     first_version: "9",
-    // APIs implemented in asm don't have debug info: http://b/190554910.
-    allow_untyped_symbols: true,
 }
 
 genrule {