chore(CI): Testing coldbox@be makes no sense as it's all unit tests

.travis.yml

@@ -10,20 +10,16 @@ env:
   global:
     - MODULE_ID=qb
   jobs:
-    - ENGINE=adobe@2018 COLDBOX_VERSION=stable
-    - ENGINE=adobe@2016 COLDBOX_VERSION=stable
-    - ENGINE=lucee@5 COLDBOX_VERSION=stable
-    - ENGINE=adobe@2018 COLDBOX_VERSION=be
-    - ENGINE=adobe@2016 COLDBOX_VERSION=be
-    - ENGINE=lucee@5 COLDBOX_VERSION=be
+    - ENGINE=adobe@2018
+    - ENGINE=adobe@2016
+    - ENGINE=lucee@5
 before_install:
   - curl -fsSl https://downloads.ortussolutions.com/debs/gpg | sudo apt-key add -
   - sudo echo "deb http://downloads.ortussolutions.com/debs/noarch /" | sudo tee -a /etc/apt/sources.list.d/commandbox.list
 install:
   - sudo apt-get update && sudo apt-get --assume-yes install commandbox jq rsync
   - box install commandbox-cfformat
   - box install
-  - box install coldbox@${COLDBOX_VERSION} --force
 before_script:
   - box server start name=qb cfengine=$ENGINE port=8500
 script: