[CI/Build] Remove redundant OpenTelemetry pip install from CI configs (#35032)

Signed-off-by: Vlad Mihailescu <vtmihailescu@gmail.com>

.buildkite/test-amd.yaml

@@ -340,11 +340,6 @@ steps:
   - vllm/
   - tests/v1/tracing
   commands:
-  - "pip install \
-      'opentelemetry-sdk>=1.26.0' \
-      'opentelemetry-api>=1.26.0' \
-      'opentelemetry-exporter-otlp>=1.26.0' \
-      'opentelemetry-semantic-conventions-ai>=0.4.1'"
   - pytest -v -s v1/tracing
 
 ##### fast check tests  #####
@@ -1963,11 +1958,6 @@ steps:
   - vllm/
   - tests/v1/tracing
   commands:
-  - "pip install \
-      'opentelemetry-sdk>=1.26.0' \
-      'opentelemetry-api>=1.26.0' \
-      'opentelemetry-exporter-otlp>=1.26.0' \
-      'opentelemetry-semantic-conventions-ai>=0.4.1'"
   - pytest -v -s v1/tracing
 
 ##### fast check tests  #####

.buildkite/test_areas/misc.yaml

@@ -88,11 +88,6 @@ steps:
   - vllm/
   - tests/v1/tracing
   commands:
-  - "pip install \
-      'opentelemetry-sdk>=1.26.0' \
-      'opentelemetry-api>=1.26.0' \
-      'opentelemetry-exporter-otlp>=1.26.0' \
-      'opentelemetry-semantic-conventions-ai>=0.4.1'"
   - pytest -v -s v1/tracing
 
 - label: Python-only Installation