Remove pkg resources (#2871)

opentelemetry-distro/test-requirements.txt

@@ -1,6 +1,5 @@
 asgiref==3.8.1
 Deprecated==1.2.14
-importlib-metadata==6.11.0
 iniconfig==2.0.0
 packaging==24.0
 pluggy==1.5.0

opentelemetry-distro/tests/test_distro.py

@@ -16,21 +16,23 @@
 import os
 from unittest import TestCase, mock
 
-from pkg_resources import DistributionNotFound, require
-
 from opentelemetry.distro import OpenTelemetryDistro
 from opentelemetry.environment_variables import (
     OTEL_METRICS_EXPORTER,
     OTEL_TRACES_EXPORTER,
 )
 from opentelemetry.sdk.environment_variables import OTEL_EXPORTER_OTLP_PROTOCOL
+from opentelemetry.util._importlib_metadata import (
+    PackageNotFoundError,
+    version,
+)
 
 
 class TestDistribution(TestCase):
     def test_package_available(self):
         try:
-            require(["opentelemetry-distro"])
-        except DistributionNotFound:
+            version("opentelemetry-distro")
+        except PackageNotFoundError:
             self.fail("opentelemetry-distro not installed")
 
     @mock.patch.dict("os.environ", {}, clear=True)