keyboard: Remove unused header file

11 jobs for keyboard-dead-code in 3 minutes and 45 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #142195
build

00:01:52

 
  Test
passed #142197
asan

00:01:32

passed #142196
test

00:01:53

 
  Manual
manual #142202
allowed to fail manual
armv8
manual #142198
allowed to fail manual
flatpak
manual #142201
allowed to fail manual
msan
manual #142203
allowed to fail manual
ppc64le
manual #142199
allowed to fail manual
tsan
manual #142200
allowed to fail manual
ubsan
 
  Review
manual #142204
allowed to fail manual
review
manual #142205
allowed to fail manual
stop_review