message: Update strobogrammatic-number.py
  It doesn't need `i += 1`. Based on git blame, it seems it was accidentally added.
diff: @@ -12,5 +12,4 @@ class Solution:
  if num[n-1-i] not in self.lookup or \
  num[i] != self.lookup[num[n-1-i]]:
  return False
  - i += 1
  return True
  