Remove unnecessary kubectl-to-oc symlink in DEB install

The symlink was a workaround for scripts that used oc for standard
Kubernetes operations on Debian where oc is not available. Now that
those scripts use kubectl directly, the workaround is no longer needed.
The oc adm subcommands (which have no kubectl equivalent) are only
used in build-time containers, not on DEB-installed hosts.

Closes #200

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

rh-pre-commit.version: 2.3.2
rh-pre-commit.check-secrets: ENABLED

Author: agullon

src/deb/install.sh

@@ -145,11 +145,6 @@ function install_ctl_tools() {
     local -r relkey="https://pkgs.k8s.io/core:/stable:/v${pkgver}/deb/Release.key"
     install_debpkg "kubectl" "${pkgver}" "${relkey}" cri-tools
 
-    # Create a symlink to the kubectl command as 'oc'
-    if [ ! -f /usr/bin/oc ] ; then
-        ln -s "$(which kubectl)" /usr/bin/oc
-    fi
-
     # Set the kubectl configuration
     if [ ! -e ~/.kube/config ] && [ ! -L ~/.kube/config ] ; then
         mkdir -p ~/.kube