removed import sys from a lot of files

src/quemb/kbe/autofrag.py

@@ -1,6 +1,5 @@
 # Author(s): Oinam Romesh Meitei
 
-import sys
 
 import numpy
 from numpy.linalg import norm

src/quemb/kbe/lo.py

@@ -2,7 +2,6 @@
 #            Henry Tran
 #
 import os
-import sys
 
 import numpy
 from libdmet.lo import pywannier90

src/quemb/kbe/pbe.py

@@ -2,7 +2,6 @@
 
 import os
 import pickle
-import sys
 from multiprocessing import Pool
 
 import h5py

src/quemb/kbe/pfrag.py

@@ -1,6 +1,5 @@
 # Author(s): Oinam Romesh Meitei
 
-import sys
 
 import h5py
 import numpy

src/quemb/molbe/_opt.py

@@ -1,6 +1,5 @@
 # Author(s): Oinam Romesh Meitei
 
-import sys
 
 import numpy
 

src/quemb/molbe/autofrag.py

@@ -1,6 +1,5 @@
 # Author: Oinam Romesh Meitei
 
-import sys
 
 from numpy.linalg import norm
 

src/quemb/molbe/be_parallel.py

@@ -1,7 +1,6 @@
 # Author(s): Oinam Romesh Meitei, Leah Weisburn
 
 import os
-import sys
 from multiprocessing import Pool
 
 import numpy

src/quemb/molbe/fragment.py

@@ -1,6 +1,5 @@
 # Author: Oinam Romesh Meitei
 
-import sys
 
 from quemb.molbe.autofrag import autogen
 from quemb.molbe.helper import get_core

src/quemb/molbe/lchain.py

@@ -1,7 +1,5 @@
 # Author(s): Oinam Romesh Meitei
 
-import sys
-
 
 def chain(self, mol, frozen_core=False, closed=False):
     """

src/quemb/molbe/lo.py

@@ -1,6 +1,5 @@
 # Author(s): Henry Tran, Oinam Meitei, Shaun Weatherly
 #
-import sys
 
 import numpy
 from numpy.linalg import eigh, inv, multi_dot, norm, svd

src/quemb/molbe/mbe.py

@@ -2,7 +2,6 @@
 
 import os
 import pickle
-import sys
 
 import h5py
 import numpy

src/quemb/molbe/misc.py

@@ -1,7 +1,6 @@
 # Author(s): Minsik Cho, Leah Weisburn
 
 import os
-import sys
 import time
 
 import h5py

src/quemb/molbe/solver.py

@@ -1,8 +1,6 @@
 # Author(s): Oinam Romesh Meitei, Leah Weisburn, Shaun Weatherly
 
 import os
-import sys
-from typing import Optional
 
 import numpy
 from numpy.linalg import multi_dot

src/quemb/shared/helper.py

@@ -1,4 +1,3 @@
-import sys
 from pathlib import Path
 from typing import Any, Callable, Optional, TypeVar