Remove all virtualenv references

As stated in Issue #3, I am removing any attempted support for virtual
environments from this role. Upstream don't support it and its so badly broken
it isn't worth pretending it works.

defaults/main.yml

@@ -3,9 +3,6 @@
 # How should things be installed, 'packages' or 'pip'
 shinken_install_from: 'pip'
 
-# Where pip will install packages
-shinken_virtualenv: /srv/shinken/environment
-
 # Path of broker configuration
 shinken_config_broker: /etc/shinken/brokers/
 

tasks/configure-shinken-webui.yml

@@ -14,7 +14,6 @@
   pip:
     state: present
     name: "pymongo>=3.0.3 passlib requests arrow bottle==0.12.8"
-#     virtualenv: {{ shinken_virtualenv }}
 
 - name: Install mongodb for storing WebUI user preferences
   package:

tasks/install-shinken-packages.yml

@@ -24,14 +24,10 @@
     name: pycurl
     version: 7.43.0
     state: present
-#    virtualenv: "{{ shinken_virtualenv }}"
-#    virtualenv_site_packages: yes
 
 - name: Install Shinken using pip
   when: shinken_install_from == "pip"
   pip: 
     name: Shinken
     state: present
-#    virtualenv: "{{ shinken_virtualenv }}"
-#    virtualenv_site_packages: yes
 

tasks/prepare-for-install.yml

@@ -11,12 +11,6 @@
     group: shinken
     system: yes
 
-# - name: Create directory for shinken to be installed to
-#   when: shinken_install_from == "pip"
-#   file:
-#     path: "{{ shinken_virtualenv }}"
-#     state: directory
-
 # needed to install shinken and its web ui
 - name: Install python-pip
   package: