Remove a useless option that was never implemented anyway

mat2

@@ -38,10 +38,8 @@ def create_arg_parser():
                         help='list all supported fileformats')
 
     info = parser.add_mutually_exclusive_group()
-    info.add_argument('-c', '--check', action='store_true',
-                      help='check if a file is free of harmful metadatas')
     info.add_argument('-s', '--show', action='store_true',
-                      help='list all the harmful metadata of a file without removing them')
+                      help='list harmful metadata detectable by MAT2 without removing them')
     info.add_argument('-L', '--lightweight', action='store_true',
                       help='remove SOME metadata')
     return parser

tests/test_climat2.py

@@ -8,12 +8,12 @@ class TestHelp(unittest.TestCase):
     def test_help(self):
         proc = subprocess.Popen(['./mat2', '--help'], stdout=subprocess.PIPE)
         stdout, _ = proc.communicate()
-        self.assertIn(b'usage: mat2 [-h] [-v] [-l] [-c | -s | -L] [files [files ...]]', stdout)
+        self.assertIn(b'usage: mat2 [-h] [-v] [-l] [-s | -L] [files [files ...]]', stdout)
 
     def test_no_arg(self):
         proc = subprocess.Popen(['./mat2'], stdout=subprocess.PIPE)
         stdout, _ = proc.communicate()
-        self.assertIn(b'usage: mat2 [-h] [-v] [-l] [-c | -s | -L] [files [files ...]]', stdout)
+        self.assertIn(b'usage: mat2 [-h] [-v] [-l] [-s | -L] [files [files ...]]', stdout)
 
 
 class TestVersion(unittest.TestCase):
@@ -23,13 +23,6 @@ class TestVersion(unittest.TestCase):
         self.assertTrue(stdout.startswith(b'MAT2 '))
 
 
-class TestExclusiveArgs(unittest.TestCase):
-    def test_version(self):
-        proc = subprocess.Popen(['./mat2', '-s', '-c'], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
-        stdout, stderr = proc.communicate()
-        self.assertIn(b'mat2: error: argument -c/--check: not allowed with argument -s/--show', stderr)
-
-
 class TestReturnValue(unittest.TestCase):
     def test_nonzero(self):
         ret = subprocess.call(['./mat2', './mat2'], stdout=subprocess.DEVNULL)