Remove as_coeff_terms()
Remove as_coeff_factors()
Merge branch 'master' into 3377-Remove-as_coeff_terms-and-as_coeff_factors
Merge branch 'master' into 3377-Remove-as_coeff_terms-and-as_coeff_factors
Merge branch 'master' into 3377-Remove-as_coeff_terms-and-as_coeff_factors
Merge branch 'master' into 3377-Remove-as_coeff_terms-and-as_coeff_factors
Merge pull request #1824 from skirpichev/3377-Remove-as_coeff_terms-and-as_coeff_factors

#3377: Remove deprecated as_coeff_terms and as_coeff_factors