QUAD_EFG includes units for efg mode of MPNMRSet

[jacksund]

Describe the bug
The MPNMRSet (with mode="efg") writes units to file for the QUAD_EFG setting. This occurs because it is using FloatWithUnit class under the hood.

To Reproduce

from pymatgen.core import Structure
from pymatgen.io.vasp.sets import MPNMRSet

# Random structure to test with
s = Structure(
    lattice=[
        [3.485437, 0.0, 2.012318],
        [1.161812, 3.286101, 2.012318],
        [0.0, 0.0, 4.024635],
    ],
    species=["Na", "Cl"],
    coords=[[0.0, 0.0, 0.0], [0.5, 0.5, 0.5]],
)

MPNMRSet(s, mode="efg").incar.write_file("INCAR")

This produces the following INCAR:

ALGO = FAST
EDIFF = -1e-10
ENCUT = 520
IBRION = -1
ISIF = 3
ISMEAR = -5
ISPIN = 2
ISYM = 0
LAECHG = True
LASPH = True
LCHARG = False
LEFG = True
LORBIT = 11
LREAL = Auto
LVHAR = True
LWAVE = False
MAGMOM = 2*0.6
NELM = 100
NELMIN = 10
NSW = 0
PREC = ACCURATE
QUAD_EFG = 104.1 mbarn -81.65 mbarn   # <------------ Note the bug here
SIGMA = 0.01

Expected behavior

The INCAR should instead have the following result for QUAD_EFG:

QUAD_EFG = 104.1 -81.65

Desktop:

• OS: Linux
• Version 2022.4.19

Additional context
This is a quick, one-line fix. We need to just convert from FloatWithUnit to Float here:

pymatgen/pymatgen/io/vasp/sets.py

Line 1942 in 1b6d1d2

quad_efg = [Species(p).get_nmr_quadrupole_moment(isotopes.get(p, None)) for p in self.poscar.site_symbols]