remove unused code

Author: kamyu104

Python/01-matrix.py

@@ -3,11 +3,6 @@
 
 import collections
 
-try:
-    xrange          # Python 2
-except NameError:
-    xrange = range  # Python 3
-
 
 class Solution(object):
     def updateMatrix(self, matrix):

Python/1-bit-and-2-bit-characters.py

@@ -1,11 +1,6 @@
 # Time:  O(n)
 # Space: O(1)
 
-try:
-    xrange          # Python 2
-except NameError:
-    xrange = range  # Python 3
-
 
 class Solution(object):
     def isOneBitCharacter(self, bits):

Python/132-pattern.py

@@ -1,11 +1,6 @@
 # Time:  O(n)
 # Space: O(n)
 
-try:
-    xrange          # Python 2
-except NameError:
-    xrange = range  # Python 3
-
 
 class Solution(object):
     def find132pattern(self, nums):

Python/24-game.py

@@ -4,11 +4,6 @@
 from operator import add, sub, mul, truediv
 from fractions import Fraction
 
-try:
-    xrange          # Python 2
-except NameError:
-    xrange = range  # Python 3
-
 
 class Solution(object):
     def judgePoint24(self, nums):

Python/4-keys-keyboard.py

@@ -1,11 +1,6 @@
 # Time:  O(1)
 # Space: O(1)
 
-try:
-    xrange          # Python 2
-except NameError:
-    xrange = range  # Python 3
-
 
 class Solution(object):
     def maxA(self, N):

Python/4sum.py

@@ -3,11 +3,6 @@
 
 import collections
 
-try:
-    xrange          # Python 2
-except NameError:
-    xrange = range  # Python 3
-
 
 # Two pointer solution. (1356ms)
 class Solution(object):

Python/accounts-merge.py

@@ -4,11 +4,6 @@
 
 import collections
 
-try:
-    xrange          # Python 2
-except NameError:
-    xrange = range  # Python 3
-
 
 class UnionFind(object):
     def __init__(self):

Python/add-binary.py

@@ -1,11 +1,6 @@
 # Time:  O(n)
 # Space: O(1)
 
-try:
-    xrange          # Python 2
-except NameError:
-    xrange = range  # Python 3
-
 
 class Solution:
     # @param a, a string

Python/add-bold-tag-in-string.py

@@ -4,11 +4,6 @@
 import collections
 import functools
 
-try:
-    xrange          # Python 2
-except NameError:
-    xrange = range  # Python 3
-
 
 # 59ms
 class Solution(object):

Python/additive-number.py

@@ -1,11 +1,6 @@
 # Time:  O(n^3)
 # Space: O(n)
 
-try:
-    xrange          # Python 2
-except NameError:
-    xrange = range  # Python 3
-
 
 class Solution(object):
     def isAdditiveNumber(self, num):