ExpressionCompleter: Remove '=' before tokenizing string, to improve completer when used in the spreadsheet.
ExpressionCompleter: Remove '=' before tokenizing string, to improve completer when used in the spreadsheet.

bblacey/FreeCAD-MacOS-CI,maurerpe/FreeCAD,maurerpe/FreeCAD,usakhelo/FreeCAD,usakhelo/FreeCAD,Fat-Zer/FreeCAD_sf_master,kkoksvik/FreeCAD,usakhelo/FreeCAD,bblacey/FreeCAD-MacOS-CI,kkoksvik/FreeCAD,timthelion/FreeCAD,chrisjaquet/FreeCAD,timthelion/FreeCAD,wood-galaxy/FreeCAD,Fat-Zer/FreeCAD_sf_master,usakhelo/FreeCAD,maurerpe/FreeCAD,Fat-Zer/FreeCAD_sf_master,wood-galaxy/FreeCAD,wood-galaxy/FreeCAD,chrisjaquet/FreeCAD,chrisjaquet/FreeCAD,maurerpe/FreeCAD,bblacey/FreeCAD-MacOS-CI,timthelion/FreeCAD,wood-galaxy/FreeCAD,chrisjaquet/FreeCAD,timthelion/FreeCAD,kkoksvik/FreeCAD,kkoksvik/FreeCAD,bblacey/FreeCAD-MacOS-CI,maurerpe/FreeCAD,wood-galaxy/FreeCAD,usakhelo/FreeCAD,timthelion/FreeCAD,Fat-Zer/FreeCAD_sf_master,bblacey/FreeCAD-MacOS-CI,chrisjaquet/FreeCAD,timthelion/FreeCAD,wood-galaxy/FreeCAD,usakhelo/FreeCAD,usakhelo/FreeCAD,kkoksvik/FreeCAD,Fat-Zer/FreeCAD_sf_master,bblacey/FreeCAD-MacOS-CI,bblacey/FreeCAD-MacOS-CI,chrisjaquet/FreeCAD,chrisjaquet/FreeCAD