Fixed E303 flake8 errors

too many blank lines (3)

testing/test_capture.py

@@ -49,7 +49,6 @@ def oswritebytes(fd, obj):
     os.write(fd, tobytes(obj))
 
 
-
 def StdCaptureFD(out=True, err=True, in_=True):
     return capture.MultiCapture(out, err, in_, Capture=capture.FDCapture)
 
@@ -1076,7 +1075,6 @@ def test_close_and_capture_again(testdir):
     """)
 
 
-
 @pytest.mark.parametrize('method', ['SysCapture', 'FDCapture'])
 def test_capturing_and_logging_fundamentals(testdir, method):
     if method == "StdCaptureFD" and not hasattr(os, 'dup'):