MeatAxe.Unbind( obj1, obj2, ..., objn )
MeatAxe.Unbind( listofobjects )
Called without arguments, this removes all files and directories
constructed by calls of MeatAxeMat and Group, provided they are still
notified in MeatAxe.files, MeatAxe.dirs and MeatAxe.fields.
Otherwise all those files in MeatAxe.files, MeatAxe.dirs and
MeatAxe.fields are removed that are specified in the argument list.
Before leaving GAP after using the MeatAxe functions you should always call
gap> MeatAxe.Unbind();
GAP 3.4.4