hide lpe tool

The PR simply tends to resolve #5044. It hides the LPE tool in the toolbar.

after changes(hidden lpe tool)

changed the description

added 3 commits

• 58c751e7...b94f83f4 - 2 commits from branch inkscape:master
• 2f583a9a - hide lpe tool

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This hard-disables the tool in code, with no way to get it back. I believe #5044 only asks for it to be hidden by default. Then if users want to turn it back on can, they then do so in the preferences (which I notice doesn't work on master).

okay i now understand this issue better