remove references to runcards folder

Author: Edoardo-Pedicillo

doc/source/getting-started/example.rst

@@ -24,8 +24,6 @@ presented in :ref:`runcard`, we can use this runcard.
               power_level: high
               nshots: 1024
 
-More examples of runcards are available on `Github <https://github.com/qiboteam/qibocal/tree/main/runcards>`_ .
-
 Run the routine
 ^^^^^^^^^^^^^^^
 

doc/source/tutorials/basic.rst

@@ -3,8 +3,6 @@ Basic examples
 
 In this section we are going to explain briefly how to perform
 the calibration of single qubit devices.
-All runcards that are going to be used are available
-`here <https://github.com/qiboteam/qibocal/tree/main/runcards/calibration_tutorial>`_.
 
 Dummy guide for single qubit calibration
 ----------------------------------------