refactor: remove educational vs professional LDPC codes comparison example and related visualizations

Author: selimfirat

docs/examples/models_fec/index.rst

@@ -185,22 +185,6 @@ Forward Error Correction (FEC) models and coding techniques, including modern de
       <div class="sphx-glr-thumbnail-title">Syndrome Decoding Visualization</div>
     </div>
 
-.. raw:: html
-
-    <div class="sphx-glr-thumbcontainer" tooltip="This example demonstrates the fundamental differences between educational hand-crafted LDPC codes :cite:`gallager1962low` and professional RPTU database codes, explaining why direct performance comparison is inappropriate and misleading. We focus on: - Educational value of small hand-crafted codes - Real-world applications of RPTU database codes - Why these serve different purposes - Proper evaluation methodologies for each type **Key Message**: These code types serve different purposes and should not be directly compared for "performance" - it's like comparing a bicycle to an airplane for transportation efficiency.">
-
-.. only:: html
-
-    .. image:: /auto_examples/models_fec/images/thumb/sphx_glr_plot_ldpc_educational_vs_professional_thumb.png
-      :alt: Educational vs Professional LDPC Codes: Understanding the Differences
-
-    :ref:`sphx_glr_auto_examples_models_fec_plot_ldpc_educational_vs_professional.py`
-
-.. raw:: html
-
-      <div class="sphx-glr-thumbnail-title">Educational vs Professional LDPC Codes: Understanding the Differences</div>
-    </div>
-
 .. raw:: html
 
     </div>
@@ -220,4 +204,3 @@ Forward Error Correction (FEC) models and coding techniques, including modern de
    /auto_examples/models_fec/plot_fec_polar_advanced_visualization
    /auto_examples/models_fec/plot_fec_polar_simulation
    /auto_examples/models_fec/plot_fec_syndrome_decoding
-   /auto_examples/models_fec/plot_ldpc_educational_vs_professional