Update CircleCI config to remove old Python versions

Removed Python versions 2.7 and 3.4 from the test matrix.

Author: bmos

.circleci/config.yml

@@ -163,8 +163,6 @@ workflows:
           matrix:
             parameters:
               version:
-                - "2.7"
-                - "3.4"
                 - "3.5"
                 - "3.6"
                 - "3.7"
@@ -175,6 +173,7 @@ workflows:
                 - "3.12"
                 - "3.13"
                 - "3.14"
+
       - testdeploy:
           requires:
             - tests