Change the order of emacs versions

- Remove emacs-25 branch build
- Remove master branch build temporarily till
  https://debbugs.gnu.org/cgi/bugreport.cgi?bug=25061#144 gets fixed.

.travis.yml

@@ -7,13 +7,14 @@ env:
     - CURL="curl -fsSkL --retry 9 --retry-delay 9"
   matrix:
   # https://github.com/npostavs/emacs-travis/releases
-  - EMACS_VERSION=24.4
-  - EMACS_VERSION=24.5
-  - EMACS_VERSION=25.1
-  - EMACS_VERSION=25.3
-  - EMACS_VERSION=25 # emacs-25 branch
   - EMACS_VERSION=26 # emacs-26 branch
-  - EMACS_VERSION=master # master branch
+  - EMACS_VERSION=25.3
+  - EMACS_VERSION=25.1
+  - EMACS_VERSION=24.5
+  - EMACS_VERSION=24.4
+  # Disabling test on master branch emacs build for now
+  # https://debbugs.gnu.org/cgi/bugreport.cgi?bug=25061#144
+  # - EMACS_VERSION=master # master branch
 install:
   - $CURL -O https://github.com/npostavs/emacs-travis/releases/download/bins/emacs-bin-${EMACS_VERSION}.tar.gz
   - tar xf emacs-bin-${EMACS_VERSION}.tar.gz -C /