build: fix error due to capability.h
build: fix error due to capability.h

In path auditor.cc sys/capability.h was included it causes bad
interaction with sys/stat.h:
In file included from /usr/include/bits/statx.h:30,
from /usr/include/sys/stat.h:446,
from pathauditor/pathauditor.cc:24:
/usr/include/linux/stat.h:57:2: error: '__s64' does not name a type
57 |  __s64 tv_sec;
|  ^~~~~
Removing this useless include fixed that build error

Signed-off-by: Clement Magnard <d87eedcfc0487d788d59b5d6553fdbc511ddef35@epita.fr>

google/path-auditor,google/path-auditor