Remove metadata variables

The information is all in the package metadata.

Author: ehrenfeu

tests/test_iotools.py

@@ -19,10 +19,6 @@
     file_types = (io.IOBase,)
 
 
-__author__ = "Niko Ehrenfeuchter"
-__copyright__ = "Niko Ehrenfeuchter"
-__license__ = "gpl3"
-
 
 def test_filehandle(tmpdir):
     tmpfile = tmpdir.join("testfile")

tests/test_pathtools.py

@@ -5,10 +5,6 @@
 from imcflibs.pathtools import jython_fiji_exists
 from imcflibs.pathtools import image_basename
 
-__author__ = "Niko Ehrenfeuchter"
-__copyright__ = "Niko Ehrenfeuchter"
-__license__ = "gpl3"
-
 
 def test_parse_path():
     """Tests using regular POSIX-style paths."""

tests/test_strtools.py

@@ -9,10 +9,6 @@
 from imcflibs.strtools import flatten
 from imcflibs.strtools import strip_prefix
 
-__author__ = "Niko Ehrenfeuchter"
-__copyright__ = "Niko Ehrenfeuchter"
-__license__ = "gpl3"
-
 
 def test__is_string_like():
     assert _is_string_like("foo") == True