Sandbox awkgram.tab.h

Sandboxing it generates this diff:

  38,39c38,39
  < #ifndef YY_YY_OUT_SOONG_TEMP_SBOX_794A09CEE4E110D9FF38139A8943928FFD7288A5_OUT_AWKGRAM_TAB_H_INCLUDED
  < # define YY_YY_OUT_SOONG_TEMP_SBOX_794A09CEE4E110D9FF38139A8943928FFD7288A5_OUT_AWKGRAM_TAB_H_INCLUDED
  ---
  > #ifndef YY_YY_OUT_AWKGRAM_TAB_H_INCLUDED
  > # define YY_YY_OUT_AWKGRAM_TAB_H_INCLUDED
  280c280
  < #endif /* !YY_YY_OUT_SOONG_TEMP_SBOX_794A09CEE4E110D9FF38139A8943928FFD7288A5_OUT_AWKGRAM_TAB_H_INCLUDED  */
  ---
  > #endif /* !YY_YY_OUT_AWKGRAM_TAB_H_INCLUDED  */

Which is acceptable, the ifdef is based on the path to the file and
just there to prevent duplicate imports.

Bug: 307824623
Test: ./build/soong/tests/genrule_sandbox_test.py awkgram.tab.h
Change-Id: I85c5e0f65e97d18f1aa8b36fa6b19402d2da6c8c
diff --git a/genrule/allowlists.go b/genrule/allowlists.go
index 874821b..3cec166 100644
--- a/genrule/allowlists.go
+++ b/genrule/allowlists.go
@@ -42,7 +42,6 @@
 		"android-cts-verifier",
 		"angle_commit_id",
 		"atest_integration_fake_src",
-		"awkgram.tab.h",
 		"camera-its",
 		"checkIn-service-stub-lite",
 		"chre_atoms_log.h",