common/: remove PATH adds from CI scripts

they are now specified in the workflow file

common/scripts/lint-commits

@@ -5,7 +5,6 @@ die() {
 	exit 1
 }
 
-PATH="/usr/libexec/chroot-git:$PATH"
 command -v git >/dev/null 2>&1 ||
 die "neither chroot-git nor git could be found!"
 

common/scripts/lint-version-change

@@ -13,7 +13,6 @@ if ! [ "$base_rev" ]; then
 	die "usage: $0 TEMPLATE BASE-REVISION [TIP-REVISION]"
 fi
 
-PATH="/usr/libexec/chroot-git:$PATH"
 if ! command -v git >/dev/null 2>&1; then
 	die "neither chroot-git nor git could be found"
 fi

common/travis/changed_templates.sh

@@ -2,8 +2,6 @@
 #
 # changed_templates.sh
 
-PATH="/usr/libexec/chroot-git:$PATH"
-
 tip="$(git rev-list -1 --parents HEAD)"
 case "$tip" in
 	# This is a merge commit, pick last parent

common/travis/fetch_upstream.sh

@@ -2,8 +2,6 @@
 #
 # changed_templates.sh
 
-PATH="/usr/libexec/chroot-git:$PATH"
-
 # required by git 2.35.2+
 git config --global --add safe.directory "$PWD"