Importer: removed commented-out assert.
Importer: removed commented-out assert.

nickerso/libcellml,nickerso/libcellml,cellml/libcellml,nickerso/libcellml,hsorby/libcellml,cellml/libcellml,hsorby/libcellml,cellml/libcellml,hsorby/libcellml,cellml/libcellml,hsorby/libcellml,nickerso/libcellml