MAINT: undoing last 2 unwanted commits

docs/source/install.rst

@@ -89,7 +89,7 @@ Once either Conda or MiniConda has been set up you can install Catalyst:
 
    .. code-block:: bash
 
-      conda env create -f python2.7-environment.yml
+    conda env create -f python2.7-environment.yml
 
 4. Activate the environment (which you need to do every time you start a new 
    session to run Catalyst):
@@ -132,19 +132,10 @@ with the following steps:
       conda env remove --name catalyst
 
 2. Create the environment:
-   
-   for python 2.7:    
 
    .. code-block:: bash
 
       conda create --name catalyst python=2.7 scipy zlib
-    
-  or for python 3.6:
-    
-   .. code-block:: bash
-
-      conda create --name catalyst python=3.6 scipy zlib
-
 
 3. Activate the environment: