Remove [test] package from opentelemetry-exporter-prometheus

Fixes open-telemetry#3725

Author: ocelotl

Diff for: exporter/opentelemetry-exporter-prometheus/pyproject.toml

@@ -31,9 +31,6 @@ dependencies = [
 ]
 
 [project.optional-dependencies]
-test = []
-
-[project.entry-points.opentelemetry_metrics_exporter]
 prometheus = "opentelemetry.exporter.prometheus:_AutoPrometheusMetricReader"
 
 [project.urls]

Diff for: exporter/opentelemetry-exporter-prometheus/test-requirements.txt

@@ -0,0 +1,18 @@
+asgiref==3.7.2
+attrs==23.2.0
+Deprecated==1.2.14
+flaky==3.7.0
+importlib-metadata==6.11.0
+iniconfig==2.0.0
+packaging==23.2
+pluggy==1.4.0
+prometheus_client==0.20.0
+py==1.11.0
+py-cpuinfo==9.0.0
+pytest==7.1.3
+pytest-benchmark==4.0.0
+tomli==2.0.1
+typing_extensions==4.10.0
+wrapt==1.16.0
+zipp==3.17.0
+-e ../../../opentelemetry-exporter-prometheus