tools: Stop shipping unit tests
tools: Stop shipping unit tests

The condition cleanup in commit d4ea3eacb719 was wrong: the previous
test only covers *.html files, but we don't want to install the unit
test *.js and *.css files either. Revert that part.

Spotted by rpmdiff.

Fixes #15376

cockpit-project/cockpit,garrett/cockpit,mvollmer/cockpit,martinpitt/cockpit,cockpit-project/cockpit,mvollmer/cockpit,mvollmer/cockpit,garrett/cockpit,martinpitt/cockpit,garrett/cockpit,martinpitt/cockpit,cockpit-project/cockpit,cockpit-project/cockpit,martinpitt/cockpit,cockpit-project/cockpit,garrett/cockpit,martinpitt/cockpit,garrett/cockpit,mvollmer/cockpit,mvollmer/cockpit