remove start from the runnable examples

Author: Archmonger

docs/examples/python/thinking_in_react/add_inverse_data_flow.py

@@ -1,7 +1,6 @@
 from reactpy import component, html, use_state
 
 
-# start
 @component
 def filterable_product_table(products):
     filter_text, set_filter_text = use_state("")

docs/examples/python/thinking_in_react/build_a_static_version_in_react.py

@@ -1,7 +1,6 @@
 from reactpy import component, html
 
 
-# start
 @component
 def product_category_row(category):
     return html.tr(html.th({"colSpan": "2"}, category))

docs/examples/python/thinking_in_react/identify_where_your_state_should_live.py

@@ -1,7 +1,6 @@
 from reactpy import component, html, use_state
 
 
-# start
 @component
 def filterable_product_table(products):
     filter_text, set_filter_text = use_state("")

docs/src/learn/thinking-in-react.md

@@ -71,7 +71,7 @@ You can either build "top down" by starting with building the components higher
 === "app.py"
 
     ```python
-    {% include "../../examples/python/thinking_in_react/build_a_static_version_in_react.py" start="# start" end="# end" %}
+    {% include "../../examples/python/thinking_in_react/build_a_static_version_in_react.py" end="# end" %}
     ```
 
 === "styles.css"
@@ -177,7 +177,7 @@ You can start seeing how your application will behave. Edit the `filter_text` in
 === "app.py"
 
     ```python
-    {% include "../../examples/python/thinking_in_react/identify_where_your_state_should_live.py" start="# start" end="# end" %}
+    {% include "../../examples/python/thinking_in_react/identify_where_your_state_should_live.py" end="# end" %}
     ```
 
 === "styles.css"
@@ -227,7 +227,7 @@ Now the application fully works!
     <!-- FIXME: Click event on the checkbox is broken. `event["target"]["checked"]` doesn't exist -->
 
     ```python
-    {% include "../../examples/python/thinking_in_react/add_inverse_data_flow.py" start="# start" end="# end" %}
+    {% include "../../examples/python/thinking_in_react/add_inverse_data_flow.py" end="# end" %}
     ```
 
 === "styles.css"