Remove duplicate MAST token example

Author: larrybradley

docs/mast/mast.rst

@@ -1132,18 +1132,6 @@ If a token is not supplied, the user will be prompted to enter one.
 
 To view tokens accessible through your account, visit https://auth.mast.stsci.edu
 
-.. doctest-skip::
-
-   >>> from astroquery.mast import Observations
-   ...
-   >>> Observations.login(token="12348r9w0sa2392ff94as841")
-   INFO: MAST API token accepted, welcome User Name [astroquery.mast.core]
-   ...
-   >>> sessioninfo = Observations.session_info()
-   eppn: [email protected]
-   ezid: uname
-   ...
-
 .. doctest-skip::
 
    >>> from astroquery.mast import Observations
@@ -1154,7 +1142,7 @@ To view tokens accessible through your account, visit https://auth.mast.stsci.ed
    >>> sessioninfo = Observations.session_info()
    eppn: [email protected]
    ezid: uname
-                ...
+   ...
 
 \* For security tokens should not be typed into a terminal or Jupyter notebook
 but instead input using a more secure method such as `~getpass.getpass`.