remove py3 mac 0.9.8 jobs from travis

pyenv now compiles against homebrew and this makes it difficult to
link against the system openssl. You should be using homebrew or
macports to get a recent OpenSSL anyway (and we continue to test it
against system Python for now)
diff --git a/.travis.yml b/.travis.yml
index 23c999e..e1af18f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -117,18 +117,6 @@
         - language: generic
           os: osx
           osx_image: xcode7
-          env: TOXENV=py33 OPENSSL=0.9.8
-        - language: generic
-          os: osx
-          osx_image: xcode7
-          env: TOXENV=py34 OPENSSL=0.9.8
-        - language: generic
-          os: osx
-          osx_image: xcode7
-          env: TOXENV=py35 OPENSSL=0.9.8
-        - language: generic
-          os: osx
-          osx_image: xcode7
           env: TOXENV=pypy OPENSSL=0.9.8
         - language: generic
           os: osx