Remove bob.buildout from build configuration (see bob/bob.conda#51)

gitlab/conda_build_config.yaml

@@ -44,7 +44,7 @@ zip_keys:
 # Ideally we want to build and test against older versions of dependencies.
 # Most of the pin numbers come from the anaconda package.
 bob_devel:
-  - 2018.02.19
+  - 2018.02.27
 
 ## The build time only dependencies.
 ## Updaing these to the latest version all the time is OK.
@@ -131,8 +131,6 @@ sphinx:
 sqlalchemy:
   - 1.1.13
 # non-anaconda
-bob_buildout:
-  - 2.1.5
 caffe:
   - 1.0
 click_plugins: