Python: Retire planners that are not supported in dotnet. (#6141)

### Motivation and Context

In dotnet, there are no action, basic or stepwise planners. Since Python
has the FunctionCallingStepwisePlanner, we will retire the legacy
stepwise planner. We're leaving the Sequential planner for the meantime
as it provides the developer with a way to show the plan steps.

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### Description

The PR:
- Removes the action, basic, and stepwise planners, along with their
unit/integration tests. Closes #5585
- Removes one action planner kernel syntax example.
- Updates the 05-planners Jupyter notebook to showcase the Sequential
Planner along with the FunctionCallingStepwisePlanner
- Fixes some sample paths that use the `prompt_template_samples` folder
in the root of the repo.

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### Contribution Checklist

<!-- Before submitting this PR, please make sure: -->

- [X] The code builds clean without any errors or warnings
- [X] The PR follows the [SK Contribution
Guidelines](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md)
and the [pre-submission formatting
script](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md#development-scripts)
raises no violations
- [X] All unit tests pass, and I have added new tests where possible
- [ ] I didn't break anyone 😄

python/samples/concepts/auto_function_calling/chat_gpt_api_function_calling.py

@@ -25,10 +25,10 @@
 Your full name, should you need to know it, is
 Splendid Speckled Mosscap. You communicate
 effectively, but you tend to answer with long
-flowery prose. You are also a math wizard, 
+flowery prose. You are also a math wizard,
 especially for adding and subtracting.
 You also excel at joke telling, where your tone is often sarcastic.
-Once you have the answer I am looking for, 
+Once you have the answer I am looking for,
 you will return a full answer to me as soon as possible.
 """
 
@@ -44,7 +44,7 @@
     ),
 )
 
-plugins_directory = os.path.join(__file__, "../../../../samples/plugins")
+plugins_directory = os.path.join(__file__, "../../../../../prompt_template_samples/")
 # adding plugins to the kernel
 # the joke plugin in the FunPlugins is a semantic plugin and has the function calling disabled.
 # kernel.import_plugin_from_prompt_directory("chat", plugins_directory, "FunPlugin")

python/samples/concepts/logging/setup_logging.py

@@ -24,7 +24,7 @@ async def main():
         OpenAIChatCompletion(service_id=service_id, ai_model_id="gpt-3.5-turbo", api_key=api_key, org_id=org_id)
     )
 
-    plugins_directory = os.path.join(__file__, "../../../../samples/plugins")
+    plugins_directory = os.path.join(__file__, "../../../../../prompt_template_samples/")
     plugin = kernel.add_plugin(parent_directory=plugins_directory, plugin_name="FunPlugin")
 
     joke_function = plugin["Joke"]

python/samples/concepts/on_your_data/azure_chat_gpt_with_data_api_function_calling.py

@@ -51,7 +51,7 @@
     chat_service,
 )
 
-plugins_directory = os.path.join(__file__, "../../../../samples/plugins")
+plugins_directory = os.path.join(__file__, "../../../../../prompt_template_samples/")
 # adding plugins to the kernel
 # the joke plugin in the FunPlugins is a semantic plugin and has the function calling disabled.
 kernel.add_plugin(parent_directory=plugins_directory, plugin_name="FunPlugin")

python/samples/concepts/plugins/plugins_from_dir.py

@@ -29,7 +29,7 @@ async def main():
         )
 
     # note: using plugins from the samples folder
-    plugins_directory = os.path.join(__file__, "../../../../samples/plugins")
+    plugins_directory = os.path.join(__file__, "../../../../../prompt_template_samples/")
     plugin = kernel.add_plugin(parent_directory=plugins_directory, plugin_name="FunPlugin")
 
     arguments = KernelArguments(input="time travel to dinosaur age", style="super silly")

python/samples/getting_started/00-getting-started.ipynb

@@ -121,7 +121,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "plugin = kernel.add_plugin(parent_directory=\"../../samples/plugins\", plugin_name=\"FunPlugin\")"
+    "plugin = kernel.add_plugin(parent_directory=\"../../../prompt_template_samples/\", plugin_name=\"FunPlugin\")"
    ]
   },
   {

python/samples/getting_started/02-running-prompts-from-file.ipynb

@@ -170,7 +170,7 @@
    "outputs": [],
    "source": [
     "# note: using plugins from the samples folder\n",
-    "plugins_directory = \"../../samples/plugins\"\n",
+    "plugins_directory = \"../../../prompt_template_samples/\"\n",
     "\n",
     "funFunctions = kernel.add_plugin(parent_directory=plugins_directory, plugin_name=\"FunPlugin\")\n",
     "\n",