Removed force-bootstrap from the travis environment. using default

.travis.yml

@@ -8,15 +8,15 @@ before_install:
     - export PATH=/usr/lib/ccache:${PATH}
     - wget https://package-data.enthought.com/edm/rh5_x86_64/1.9/edm_1.9.2_linux_x86_64.sh && bash ./edm_1.9.2_linux_x86_64.sh -b -f -p $HOME
     - export PATH=${HOME}/edm/bin:${PATH}
-    - edm install -y -e force-bootstrap click setuptools
-    - edm run -e force-bootstrap -- python -m ci build-env
+    - edm install -y click setuptools pyyaml
+    - edm run -- python -m ci build-env
 script:
-    - edm run -e force-bootstrap -- python -m ci install
-    - edm run -e force-bootstrap -- python -m ci flake8
-    - edm run -e force-bootstrap -- python -m ci test
-    - edm run -e force-bootstrap -- python -m ci docs
+    - edm run -- python -m ci install
+    - edm run -- python -m ci flake8
+    - edm run -- python -m ci test
+    - edm run -- python -m ci docs
 after_success:
-    - edm run -e force-bootstrap -- python -m ci coverage
-    - edm run -e force-bootstrap -- pip install codecov
-    - edm run -e force-bootstrap -- codecov
+    - edm run -- python -m ci coverage
+    - edm run -- pip install codecov
+    - edm run -- codecov
     - bash <(curl -s https://codecov.io/bash)