Don't check copyrights on .gitignore files

(cherry picked from commit 718c527e)
7 jobs for pkcs11-missing-gitignore-v9_11 in 5 minutes and 42 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Precheck
passed precheck:debian:sid:amd64 #24242
amd64 docker linux

00:00:13

 
  Build
passed build:debian:sid:amd64 #24243
amd64 docker linux

00:01:20

passed build:debian:sid:i386 #24244
i386 docker linux

00:01:24

 
  Test
passed systemtest:debian:sid:amd64 #24247
amd64 docker linux

00:04:03

passed systemtest:debian:sid:i386 #24248
i386 docker linux

00:04:04

passed unittest:debian:sid:amd64 #24245
amd64 docker linux

00:00:48

passed unittest:debian:sid:i386 #24246
i386 docker linux

00:00:46