refactor(generative-ai): Cleaning samples - Group A (Controlled Generation, Embeddings, Extensions, Function Calling) (GoogleCloudPlatform#12635)

* Delete old Samples from Group A

* Delete useless tests

* Specified the location for the model.

Author: Thoughtseize1

generative_ai/chat_completions/chat_completions_function_calling_basic.py

@@ -15,8 +15,6 @@
 import os
 
 import chat_completions_credentials_refresher
-import chat_completions_function_calling_basic
-import chat_completions_function_calling_config
 import chat_completions_non_streaming_image
 import chat_completions_non_streaming_text
 import chat_completions_streaming_image
@@ -47,22 +45,6 @@ def test_non_streaming_image() -> None:
     assert response
 
 
-# TODO: Delete this test after approval /function_calling/chat_function_calling_test.py::test_function_calling_basic
-def test_function_calling_basic() -> None:
-    response = chat_completions_function_calling_basic.generate_text(
-        PROJECT_ID, LOCATION
-    )
-    assert response
-
-
-# TODO: Delete this test after approval /function_calling/chat_function_calling_test.py::test_function_calling_config
-def test_function_calling_config() -> None:
-    response = chat_completions_function_calling_config.generate_text(
-        PROJECT_ID, LOCATION
-    )
-    assert response
-
-
 def test_credentials_refresher() -> None:
     response = chat_completions_credentials_refresher.generate_text(
         PROJECT_ID, LOCATION