fix: Don't install a system version of Node

`nvm --lts` appears to be installing Node v18.

Node 18 has switched the version of `glibc`, and the version it wants does not seem to be present on the AMI.

Given Node 18 enters a formal LTS in Oct 2022, and builds should be individually managing their node version,
this change removes any system wide install of node.

See: nodejs/node#42659

roles/teamcity-agent/tasks/main.yml

@@ -68,8 +68,6 @@
     set -e
     curl -o- https://raw.githubusercontent.com/creationix/nvm/v{{nvm_version}}/install.sh | bash
     source /opt/teamcity/.nvm/nvm.sh
-    nvm install node
-    nvm install --lts
   become: yes
   become_user: teamcity
   args: