Remove unnecessary pip upgrades

Author: rmccorm4

ci/L0_backend_vllm/test.sh

@@ -28,7 +28,7 @@
 RET=0
 SUBTESTS="accuracy_test request_cancellation enabled_stream vllm_backend metrics_test"
 
-python3 -m pip install --upgrade pip && pip3 install tritonclient[grpc]
+python3 -m pip install tritonclient[grpc]
 
 for TEST in ${SUBTESTS}; do
     (cd ${TEST} && bash -ex test.sh && cd ..)

ci/L0_multi_gpu/test.sh

@@ -28,7 +28,7 @@
 RET=0
 SUBTESTS="vllm_backend multi_lora"
 
-python3 -m pip install --upgrade pip && pip3 install tritonclient[grpc]
+python3 -m pip install tritonclient[grpc]
 
 for TEST in ${SUBTESTS}; do
     (cd ${TEST} && bash -ex test.sh && cd ..)