remove unused patches

Signed-off-by: Igor Gnatenko <i.gnatenko.brain@gmail.com>

fix-endianess.patch

@@ -1,19 +0,0 @@
-diff -up mutagen-1.31/tests/test__id3specs.py.endian mutagen-1.31/tests/test__id3specs.py
---- mutagen-1.31/tests/test__id3specs.py.endian	2015-11-28 12:47:12.780003256 +0100
-+++ mutagen-1.31/tests/test__id3specs.py	2015-11-28 12:48:10.388035715 +0100
-@@ -102,8 +102,13 @@ class SpecSanityChecks(TestCase):
-         # utf-16
-         f.encoding = 1
-         self.assertEqual(s.read(f, s.write(f, values)), (values, b""))
--        self.assertEquals(
--            s.write(f, [(u"A", 100)]), b"\xff\xfeA\x00\x00\x00\x00\x00\x00d")
-+        data = s.write(f, [(u"A", 100)])
-+        if sys.byteorder == 'little':
-+            self.assertEquals(
-+                data, b"\xff\xfeA\x00\x00\x00\x00\x00\x00d")
-+        else:
-+            self.assertEquals(
-+                data, b"\xfe\xff\x00A\x00\x00\x00\x00\x00d")
- 
-         # utf-16be
-         f.encoding = 2