I have a file with this content :
"mg_bar mg_pourte mg_electrik la_skal la_skeviol la_bled rs_eolienne etc ..."
I want to remove the file all words beginning with mg.

I know we have to use sed command but the problem
sed -e 's/^bhop//' file.txt

Remove only twox caracters mg, when I want to remove the entire word.

Please help me.
Thx.