chore: Remove deprecated convert_session_to_eval_format function

This change removes the `convert_session_to_eval_format` function and its associated unit tests. New tests for `create_gcs_eval_managers_from_uri` are also added.

PiperOrigin-RevId: 819576620

Author: ankursharmas

src/google/adk/cli/utils/evals.py

@@ -14,15 +14,11 @@
 
 from __future__ import annotations
 
-import dataclasses
 import os
-from typing import Any
-from typing import Tuple
 
 from pydantic import alias_generators
 from pydantic import BaseModel
 from pydantic import ConfigDict
-from typing_extensions import deprecated
 
 from ...evaluation.eval_case import Invocation
 from ...evaluation.evaluation_generator import EvaluationGenerator
@@ -43,83 +39,6 @@ class GcsEvalManagers(BaseModel):
   eval_set_results_manager: GcsEvalSetResultsManager
 
 
-@deprecated('Use convert_session_to_eval_invocations instead.')
-def convert_session_to_eval_format(session: Session) -> list[dict[str, Any]]:
-  """Converts a session data into eval format.
-
-  Args:
-      session: The session that should be converted.
-
-  Returns:
-      list: A single evaluation dataset in the required format.
-  """
-  eval_case = []
-  events = session.events if session and session.events else []
-
-  for event in events:
-    if event.author == 'user':
-      if not event.content or not event.content.parts:
-        continue
-
-      # Extract user query
-      content = event.content
-      parts = content.parts
-
-      query = parts[0].text or ''
-
-      # Find the corresponding tool usage or response for the query
-      expected_tool_use = []
-      intermediate_agent_responses = []
-
-      # Check subsequent events to extract tool uses or responses for this turn.
-      for subsequent_event in events[events.index(event) + 1 :]:
-        event_author = subsequent_event.author or 'agent'
-        if event_author == 'user':
-          # We found an event where the author was the user. This means that a
-          # new turn has started. So close this turn here.
-          break
-
-        if not subsequent_event.content or not subsequent_event.content.parts:
-          continue
-
-        for subsequent_part in subsequent_event.content.parts:
-          # Some events have both function call and reference
-
-          if subsequent_part.function_call:
-            tool_name = subsequent_part.function_call.name or ''
-            tool_input = subsequent_part.function_call.args or {}
-            expected_tool_use.append({
-                'tool_name': tool_name,
-                'tool_input': tool_input,
-            })
-          elif subsequent_part.text:
-            # Also keep track of all the natural language responses that
-            # agent (or sub agents) generated.
-            intermediate_agent_responses.append(
-                {'author': event_author, 'text': subsequent_part.text}
-            )
-
-      # If we are here then either we are done reading all the events or we
-      # encountered an event that had content authored by the end-user.
-      # This, basically means an end of turn.
-      # We assume that the last natural language intermediate response is the
-      # final response from the agent/model. We treat that as a reference.
-      eval_case.append({
-          'query': query,
-          'expected_tool_use': expected_tool_use,
-          'expected_intermediate_agent_responses': intermediate_agent_responses[
-              :-1
-          ],
-          'reference': (
-              intermediate_agent_responses[-1]['text']
-              if intermediate_agent_responses
-              else ''
-          ),
-      })
-
-  return eval_case
-
-
 def convert_session_to_eval_invocations(session: Session) -> list[Invocation]:
   """Converts a session data into a list of Invocation.