seccomp: remove repeat syscall definitions

Remove redundant syscall definitions in a few Chrome OS policy files
that are causing failures now because of crrev.com/c/2538003.

BUG=chromium:1033137
TEST=None

Change-Id: I176148b04d0a24c42de8e554b64d3d22e3388abd
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/adhd/+/2560570
Tested-by: Nicole Anderson-Au <[email protected]>
Commit-Queue: Jorge Lucangeli Obes <[email protected]>
Reviewed-by: Dylan Reid <[email protected]>
diff --git a/seccomp/cras-seccomp-arm.policy b/seccomp/cras-seccomp-arm.policy
index 16b6ca3..e823244 100644
--- a/seccomp/cras-seccomp-arm.policy
+++ b/seccomp/cras-seccomp-arm.policy
@@ -85,7 +85,6 @@
 pipe2: 1
 sched_get_priority_max: 1
 sysinfo: 1
-flock: 1
 
 # Allow ioctl command of type 'A' and 'U' for SNDRV_PCM_IOCTL_* and
 # SNDRV_CTL_IOCTL_*, and EVIOCGSW(8), EVIOCGNAME(256), EVIOCGBIT(0x05, 8),
diff --git a/seccomp/cras-seccomp-arm64.policy b/seccomp/cras-seccomp-arm64.policy
index d505d17..d06a741 100644
--- a/seccomp/cras-seccomp-arm64.policy
+++ b/seccomp/cras-seccomp-arm64.policy
@@ -53,7 +53,6 @@
 fchmod: 1
 fchmodat: 1
 flock: 1
-flock: 1
 getegid: 1
 geteuid: 1
 getgid: 1