system-cmds: remove unused patch

Author: asdfugil

build_patch/system-cmds/fix-shutdown.patch

@@ -68,14 +68,5 @@ index 597f9f2..f5d8dd4 100644
  /*
   * The following tokens are included in the audit record for shutdown
   * header
-@@ -718,6 +721,7 @@ audit_shutdown(int exitstatus)
- 	return 1;
- }
- 
-+#if defined(__APPLE__) && !(TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR)
- 
- static bool
- kextdDisabled(void)
--- 
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