Remove code block from preview test fixture

The preview format does nothing to the code block so it was misleading
and you would think that the formatter did not format that docstring but
it actually did. Just did not format the code block.

crates/ruff_python_formatter/resources/test/fixtures/ruff/preview.py

@@ -1,19 +1,5 @@
 """
 Black's `Preview.module_docstring_newlines`
-
-
-A code black to format
-.. code-block:: python
-
-    from bokeh.events import ButtonClick
-    from bokeh.models import Button
-
-    button = Button()
-
-    def callback(event         ):
-        print('Python:Click')
-
-    button.on_event(ButtonClick, callback)
 """
 first_stmt_after_module_level_docstring = 1
 

crates/ruff_python_formatter/tests/snapshots/format@preview.py.snap

@@ -6,20 +6,6 @@ input_file: crates/ruff_python_formatter/resources/test/fixtures/ruff/preview.py
 ```python
 """
 Black's `Preview.module_docstring_newlines`
-
-
-A code black to format
-.. code-block:: python
-
-    from bokeh.events import ButtonClick
-    from bokeh.models import Button
-
-    button = Button()
-
-    def callback(event         ):
-        print('Python:Click')
-
-    button.on_event(ButtonClick, callback)
 """
 first_stmt_after_module_level_docstring = 1
 
@@ -105,20 +91,6 @@ source_type                = Python
 ```python
 """
 Black's `Preview.module_docstring_newlines`
-
-
-A code black to format
-.. code-block:: python
-
-    from bokeh.events import ButtonClick
-    from bokeh.models import Button
-
-    button = Button()
-
-    def callback(event         ):
-        print('Python:Click')
-
-    button.on_event(ButtonClick, callback)
 """
 first_stmt_after_module_level_docstring = 1
 
@@ -189,13 +161,11 @@ def f():
 ```diff
 --- Stable
 +++ Preview
-@@ -13,15 +13,14 @@
-     def callback(event         ):
-         print('Python:Click')
- 
--    button.on_event(ButtonClick, callback)
+@@ -1,13 +1,12 @@
+ """
+-Black's `Preview.module_docstring_newlines`
 -"""
-+    button.on_event(ButtonClick, callback)"""
++Black's `Preview.module_docstring_newlines`"""
 +
  first_stmt_after_module_level_docstring = 1
  
@@ -208,7 +178,7 @@ def f():
  
  
  def raw_docstring():
-@@ -41,23 +40,22 @@
+@@ -27,23 +26,22 @@
  
  
  class RemoveNewlineBeforeClassDocstring:
@@ -241,7 +211,7 @@ def f():
  
      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa[bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] = (
          cccccccc.ccccccccccccc(d).cccccccc + e
-@@ -71,9 +69,9 @@
+@@ -57,9 +55,9 @@
          + eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
      )
  
@@ -277,21 +247,7 @@ source_type                = Python
 
 ```python
 """
-Black's `Preview.module_docstring_newlines`
-
-
-A code black to format
-.. code-block:: python
-
-    from bokeh.events import ButtonClick
-    from bokeh.models import Button
-
-    button = Button()
-
-    def callback(event         ):
-        print('Python:Click')
-
-    button.on_event(ButtonClick, callback)"""
+Black's `Preview.module_docstring_newlines`"""
 
 first_stmt_after_module_level_docstring = 1