Remove support for py34

Due to the change from Ubuntu Trusty to Xenial, only python3.5 is
available(Python3.4 is restricted to <= Mitaka). So, there is no
need to continue to keep these settings.

Change-Id: I07bf6c3299a2e509a2d30342922459dc79c8f281
diff --git a/releasenotes/notes/remove-support-of-py34-7d59fdb431fefe24.yaml b/releasenotes/notes/remove-support-of-py34-7d59fdb431fefe24.yaml
new file mode 100644
index 0000000..093228a
--- /dev/null
+++ b/releasenotes/notes/remove-support-of-py34-7d59fdb431fefe24.yaml
@@ -0,0 +1,5 @@
+---
+deprecations:
+  - |
+    Remove the support of python3.4, because in Ubuntu Xenial only
+    python3.5 is available (python3.4 is restricted to <= Mitaka).
diff --git a/setup.cfg b/setup.cfg
index b292970..9eeb023 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -16,7 +16,6 @@
     Programming Language :: Python :: 2
     Programming Language :: Python :: 2.7
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.4
     Programming Language :: Python :: 3.5
 
 [files]