ci: move release-ready to default build and enable tests+install on it

with meson, the only difference between our 'default' and 'release-ready'
builds is that the release build uses a different build type which sets
some compile/build flags. these should not provide any differing coverage
over a regular build, so we can reduce our job matrix by one here

Differential Revision: https://phab.enlightenment.org/D9123

.ci/ci-make-check.sh

@@ -1,9 +1,6 @@
 #!/bin/sh
 
 . .ci/travis.sh
-if [ "$1" = "release-ready" ] ; then
-  exit 0
-fi
 
 if [ "$1" = "mingw" ] ; then
   exit 0

.ci/ci-make-install.sh

@@ -2,9 +2,6 @@
 
 set -e
 . .ci/travis.sh
-if [ "$1" = "release-ready" ] ; then
-  exit 0
-fi
 if [ "$1" = "coverity" ] ; then
   exit 0
 fi

.travis.yml

@@ -54,9 +54,6 @@ jobs:
     - os: linux
       env: DISTRO=Fedora29 CI_BUILD_TYPE=wayland
     - os: linux
-      env: DISTRO=Fedora29 CI_BUILD_TYPE=default
-    - os: linux
-      if: type = cron
       env: DISTRO=Fedora29 CI_BUILD_TYPE=release-ready
     - os: linux
       if: type = cron