Added support for recent CPython and PyPy versions; Droped Python v2.7 Support (#680)

test/test_plugin_sendgrid.py

@@ -22,13 +22,7 @@
 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 # THE SOFTWARE.
-try:
-    # Python 3.x
-    from unittest import mock
-
-except ImportError:
-    # Python 2.7
-    import mock
+from unittest import mock
 
 import pytest
 import requests