Remove duplicate word in help (#73)

Signed-off-by: Crayon <[email protected]>

flawfinder.py

@@ -1776,8 +1776,8 @@ def process_c_file(f, patch_infos):
  print('Unfortunately, your data and/or system settings are not.')
  print('Here are some options:')
  print('1. Run: PYTHONUTF8=0 python3 flawfinder')
- print(' if your system and and data are all properly set up for')
- print(' a non-UTF-8 encoding.')
+ print(' if your system and data are all properly set up for a')
+ print(' non-UTF-8 encoding.')
  print('2. Run: PYTHONUTF8=0 LC_ALL=C.ISO-2022 python3 flawfinder')
  print(' if your data has a specific encoding such as ISO-2022')
  print(' (replace "ISO-2022" with the name of your encoding,')