Search results pane: remove "space Select" from footer

[rsyring]

While in search results, I currently see no reason to have "space Select" as a shortcut specified in the footer. Currently, moving the focus between search results already "selects" the unit for display in the tab groups. Hitting <space> once a unit is already focused/highlighted is, I believe, redundant?

[isd-project]

With space you keep the unit selected. So pressing space on three units, selects those three.
Then you can stop all of them at once and/or see their output at once