remove legacy_type_system usage

Author: atmnp

numba_cuda/numba/cuda/misc/quicksort.py

@@ -5,7 +5,7 @@
 
 import numpy as np
 
-from numba.cuda import types, config
+from numba.cuda import types
 
 
 QuicksortImplementation = collections.namedtuple(
@@ -33,10 +33,7 @@
 def make_quicksort_impl(
     wrap, lt=None, is_argsort=False, is_list=False, is_np_array=False
 ):
-    if config.USE_LEGACY_TYPE_SYSTEM:
-        intp = types.intp
-    else:
-        intp = types.py_int
+    intp = types.intp
     zero = intp(0)
 
     # Two subroutines to make the core algorithm generic wrt. argsort