setools: fix compilation with python 3.9

Don't warn on deprecated declarations.

Rename warning patch. It's specific to foritfy-headers.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

utils/setools/patches/010-no-format.patch

@@ -0,0 +1,11 @@
+diff -u --recursive setools-vanilla/setup.py setools/setup.py
+--- setools-vanilla/setup.py	2020-04-01 09:57:49.000000000 -0500
++++ setools/setup.py	2020-08-12 21:44:41.265149504 -0500
+@@ -109,7 +109,6 @@
+                          extra_compile_args=['-Werror', '-Wextra',
+                                              '-Waggregate-return',
+                                              '-Wfloat-equal',
+-                                             '-Wformat', '-Wformat=2',
+                                              '-Winit-self',
+                                              '-Wmissing-format-attribute',
+                                              '-Wmissing-include-dirs',