Cleanup files

Author: psx95

samples/adk-sql-agent/README.md

@@ -30,16 +30,11 @@ git clone https://github.com/GoogleCloudPlatform/opentelemetry-operations-python
 cd opentelemetry-operations-python/samples/adk-sql-agent
 ```
 
-Create a virtual environment and install the dependencies:
+Configure the environment and run the sample:
 ```sh
 python -m venv venv/
 source venv/bin/activate
 pip install -r requirements.txt
-```
-
-Configure the environment and run the sample:
-
-```sh
 env $(cat main.env | xargs) python main.py
 ```
 

samples/adk-sql-agent/sql_agent/agent.py

@@ -61,9 +61,6 @@
 ---
 """
 
-tracer = trace.get_tracer(__name__)
-
-
 def get_dbpath(thread_id: str) -> str:
     # Ephemeral sqlite database per conversation thread
     _, path = tempfile.mkstemp(suffix=".db")