Yes, as pointed out in Sketchup crashes after uninstalling revit importer plugin - #2 by ateliernab the Revit Importer uninstaller doesn’t work properly, so not installing is the solution. This is an annoying bug, been on our list for ages, but it would require quite some rework to fix due to the way Revit Importer was originally created, so keeps getting bumped down by higher priority fixes.
Dan