Improve naming in NcWmsPanel
Don't bother hiding/showing map time controls

Fix for #1362. These controls can be used form the time the parent panel is visible so there's no point hiding/showing them based on the time subset being loaded.
Remove event listener that is never called
Remove empty event listener
Remove events that are (probably/possibly) unused
Merge pull request #1384 from aodn/Issue_#1362

Issue #1362