Remove format.h and ioctl.h from utils

Now that we're in one repo utils can get its format and ioctl headers
from the authoriative kmod files.   When we're building a dist tarball
we copy the files over so that the build from the dist tarball can use
them.

Signed-off-by: Zach Brown <zab@versity.com>

utils/.gitignore

@@ -2,6 +2,8 @@
 *.d
 *.swp
 src/scoutfs
+src/format.h
+src/ioctl.h
 .sparse*
 .mock.build*
 cscope.*