Removing chemical entity results from both find & replace boxes

[lpalbou]

Currently, it's possible to find and to replace compounds / chemical entity, which also authorize a user to potentially change a GP to a compound. We don't want that.

@tmushayahama to fix by removing chemical entity results from both the find & replace boxes.

Note: the autocomplete behavior will have to be reviewed later on, when working on a sharable component across UIs