Delete duplicate `percentage_grown` attribute
Delete duplicate `percentage_grown` attribute

Fixes #2031

cesy/growstuff,Growstuff/growstuff,Growstuff/growstuff,Br3nda/growstuff,Growstuff/growstuff,cesy/growstuff,Br3nda/growstuff,Br3nda/growstuff,Br3nda/growstuff,cesy/growstuff,Growstuff/growstuff,yez/growstuff,yez/growstuff,cesy/growstuff,yez/growstuff,yez/growstuff