Potential fix for code scanning alert no. 1030: Unused import

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

Author: whoisj

qa/L0_http/generate_endpoint_test.py

@@ -25,7 +25,6 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-import base64
 import sys
 
 sys.path.append("../common")