Remove signal handler from observability tests

src/python/grpcio_tests/tests/observability/BUILD.bazel

@@ -41,7 +41,6 @@ py_test(
         ":test_server",
         "//src/python/grpcio/grpc:grpcio",
         "//src/python/grpcio_observability/grpc_observability:pyobservability",
-        "//src/python/grpcio_tests/tests/fork:native_debug",
         "//src/python/grpcio_tests/tests/testing",
         requirement("opentelemetry-sdk"),
     ],
@@ -57,7 +56,6 @@ py_test(
         ":test_server",
         "//src/python/grpcio/grpc:grpcio",
         "//src/python/grpcio_observability/grpc_observability:pyobservability",
-        "//src/python/grpcio_tests/tests/fork:native_debug",
         "//src/python/grpcio_tests/tests/testing",
         requirement("protobuf"),
         requirement("opentelemetry-sdk"),
@@ -74,7 +72,6 @@ py_test(
         ":test_server",
         "//src/python/grpcio/grpc:grpcio",
         "//src/python/grpcio_csm_observability/grpc_csm_observability:csm_observability",
-        "//src/python/grpcio_tests/tests/fork:native_debug",
         "//src/python/grpcio_tests/tests/testing",
         requirement("protobuf"),
         requirement("opentelemetry-sdk"),

src/python/grpcio_tests/tests/observability/_csm_observability_plugin_test.py

@@ -43,10 +43,6 @@ from opentelemetry.sdk.metrics.export import MetricsData
 from opentelemetry.sdk.metrics.export import PeriodicExportingMetricReader
 from opentelemetry.sdk.resources import Resource
 
-from src.python.grpcio_tests.tests.fork import native_debug
-
-native_debug.install_failure_signal_handler()
-
 from tests.observability import _test_server
 
 logger = logging.getLogger(__name__)

src/python/grpcio_tests/tests/observability/_observability_plugin_test.py

@@ -33,10 +33,6 @@ from opentelemetry.sdk.metrics.export import MetricExporter
 from opentelemetry.sdk.metrics.export import MetricsData
 from opentelemetry.sdk.metrics.export import PeriodicExportingMetricReader
 
-from src.python.grpcio_tests.tests.fork import native_debug
-
-native_debug.install_failure_signal_handler()
-
 from tests.observability import _test_server
 
 logger = logging.getLogger(__name__)

src/python/grpcio_tests/tests/observability/_open_telemetry_observability_test.py

@@ -36,10 +36,6 @@ from opentelemetry.sdk.metrics.export import MetricExporter
 from opentelemetry.sdk.metrics.export import MetricsData
 from opentelemetry.sdk.metrics.export import PeriodicExportingMetricReader
 
-from src.python.grpcio_tests.tests.fork import native_debug
-
-native_debug.install_failure_signal_handler()
-
 from tests.observability import _test_server
 
 logger = logging.getLogger(__name__)