fix: Remove unused dependencies and update py version (#119)

Author: kthota-g

.python-version

@@ -1 +1 @@
-3.13
+3.10

examples/google_adk/birthday_planner/pyproject.toml

@@ -3,7 +3,7 @@ name = "adk-a2a-client-example"
 version = "0.1.0"
 description = "Birthday planner agent example"
 readme = "README.md"
-requires-python = ">=3.12"
+requires-python = ">=3.10"
 dependencies = [
     "a2a-sdk",
     "click>=8.1.8",

examples/google_adk/calendar_agent/pyproject.toml

@@ -3,7 +3,7 @@ name = "adk-auth-example"
 version = "0.1.0"
 description = "Calendar agent example"
 readme = "README.md"
-requires-python = ">=3.12"
+requires-python = ">=3.10"
 dependencies = [
     "a2a-sdk",
     "click>=8.1.8",

examples/helloworld/agent_executor.py

@@ -1,5 +1,3 @@
-from typing_extensions import override
-
 from a2a.server.agent_execution import AgentExecutor, RequestContext
 from a2a.server.events import EventQueue
 from a2a.utils import new_agent_text_message
@@ -18,7 +16,6 @@ class HelloWorldAgentExecutor(AgentExecutor):
     def __init__(self):
         self.agent = HelloWorldAgent()
 
-    @override
     async def execute(
         self,
         context: RequestContext,
@@ -27,7 +24,6 @@ async def execute(
         result = await self.agent.invoke()
         event_queue.enqueue_event(new_agent_text_message(result))
 
-    @override
     async def cancel(
         self, context: RequestContext, event_queue: EventQueue
     ) -> None:

examples/helloworld/pyproject.toml

@@ -3,7 +3,7 @@ name = "helloworld"
 version = "0.1.0"
 description = "HelloWorld agent example that only returns Messages"
 readme = "README.md"
-requires-python = ">=3.12"
+requires-python = ">=3.10"
 dependencies = [
     "a2a-sdk",
     "click>=8.1.8",

examples/langgraph/pyproject.toml

@@ -3,7 +3,7 @@ name = "langgraph-example"
 version = "0.1.0"
 description = "Currency conversion agent example"
 readme = "README.md"
-requires-python = ">=3.12"
+requires-python = ">=3.10"
 dependencies = [
     "a2a-sdk",
     "click>=8.1.8",

pyproject.toml

@@ -15,7 +15,6 @@ dependencies = [
     "pydantic>=2.11.3",
     "sse-starlette>=2.3.3",
     "starlette>=0.46.2",
-    "typing-extensions>=4.13.2",
 ]
 
 classifiers = [