matroska.py: remove python2 support

Since 0.33.0 mpv does not support python2. This commit removes
python2 support from the file completely with the following
changes:

 - __future__ import of print_function is python2 only
 - unicode literals are legacy in python3
 - 'sys.version_info.major < 3' check is redundant

1 files changed, 2 insertions, 6 deletions

diff --git a/TOOLS/matroska.py b/TOOLS/matroska.py
index 2c1b751a54..d75c45a715 100755
--- a/TOOLS/matroska.py
+++ b/TOOLS/matroska.py
@@ -21,8 +21,6 @@ Can also be used to directly parse Matroska files and display their contents.
 # License along with mpv.  If not, see <http://www.gnu.org/licenses/>.
 #
 
-# for compatibility with Python 2.x
-from __future__ import print_function
 
 elements_ebml = (
     'EBML, 1a45dfa3, sub', (
@@ -300,8 +298,8 @@ parse_elems(elements_ebml, 'EBML')
 parse_elems(elements_matroska, 'MATROSKA')
 
 def printf(out, *args):
-    out.write(u' '.join([str(x) for x in args]))
-    out.write(u'\n')
+    out.write(' '.join(str(x) for x in args))
+    out.write('\n')
 
 def generate_C_header(out):
     printf(out, '// Generated by TOOLS/matroska.py, do not edit manually')
@@ -466,8 +464,6 @@ if __name__ == "__main__":
     elif sys.argv[1] == '--generate-definitions':
         generate_C_definitions(sys.stdout)
     else:
-        if sys.version_info.major < 3:
-            raise Exception("Dumping requires Python 3.")
         s = open(sys.argv[1], "rb")
         while 1:
             start = s.tell()