Remove trailing whitespaces

To please my OCD, and remove my editor flashing boxes,
I am removing trailing whitespaces. They have no purpose in life.

contrib/util/check-config.sh

@@ -404,7 +404,7 @@ fi
 
 # IOSCHED_CFQ CFQ_GROUP_IOSCHED
 flags="
-  BLK_CGROUP BLK_DEV_THROTTLING 
+  BLK_CGROUP BLK_DEV_THROTTLING
   CGROUP_PERF
   CGROUP_HUGETLB
   NET_CLS_CGROUP $netprio

scripts/package-airgap

@@ -8,5 +8,5 @@ cd $(dirname $0)/..
 airgap_image_file='scripts/airgap/image-list.txt'
 images=$(cat "${airgap_image_file}")
 xargs -n1 docker pull <<< "${images}"
-docker save ${images} -o dist/artifacts/k3s-airgap-images-${ARCH}.tar 
+docker save ${images} -o dist/artifacts/k3s-airgap-images-${ARCH}.tar
 cp "${airgap_image_file}" dist/artifacts/k3s-images.txt

scripts/package-rpm

@@ -54,7 +54,7 @@ if ! grep "BEGIN PGP PRIVATE KEY BLOCK" <<<"$PRIVATE_KEY"; then
   exit 0
 fi
 
-cat <<\EOF >~/.rpmmacros 
+cat <<\EOF >~/.rpmmacros
 %_signature gpg
 %_gpg_name ci@rancher.com
 EOF

scripts/provision/vagrant

@@ -11,7 +11,7 @@ fi
 if [[ $HOME = /go/* ]]; then
     echo 'Must not launch vagrant from /go/'
     exit 1
-fi 
+fi
 cd
 
 # --- Default to root user for vagrant ssh

scripts/wg-add.sh

@@ -16,7 +16,7 @@ auto-mtu() {
 }
 
 # probe for any modules that may be needed
-modprobe wireguard 
+modprobe wireguard
 modprobe tun
 
 # try wireguard kernel module first