fix some doc API issues (#270)

Author: zingale

docs/source/pyro.rst

@@ -37,22 +37,6 @@ Subpackages
 Submodules
 ----------
 
-pyro.compare module
--------------------
-
-.. automodule:: pyro.compare
-   :members:
-   :undoc-members:
-   :show-inheritance:
-
-pyro.mg\_test\_simple module
-----------------------------
-
-.. automodule:: pyro.mg_test_simple
-   :members:
-   :undoc-members:
-   :show-inheritance:
-
 pyro.plot module
 ----------------
 
@@ -61,14 +45,6 @@ pyro.plot module
    :undoc-members:
    :show-inheritance:
 
-pyro.plotvar module
--------------------
-
-.. automodule:: pyro.plotvar
-   :members:
-   :undoc-members:
-   :show-inheritance:
-
 pyro.pyro\_sim module
 ---------------------