Don't reinstall librdkafka and confluent_kafka on e2e tests (#17376)

The Agent now includes librdkafka and other dependencies as part of
the confluent_kafka package.

Author: alopezz

kafka_consumer/hatch.toml

@@ -11,12 +11,6 @@ post-install-commands = [
 [envs.default.env-vars]
 ZK_VERSION = "3.6.4"
 AUTHENTICATION = "noauth"
-# The format is MMmmrr with MM = Major version, mm = minor version, rr = revision
-# This is needed to manually install the right version of librdkafka when we bump confluent-kafka
-# Thanks to this, the kerberos tests will be green even if the agent is still shipped with an older version
-# Bump them when you bump the confluent-kafka version
-LIBRDKAFKA_VERSION = "020300"
-CONFLUENT_KAFKA_VERSION = "2.3.0"
 
 [[envs.default.matrix]]
 python = ["3.11"]
@@ -37,6 +31,3 @@ matrix.auth.env-vars = "AUTHENTICATION"
 [envs.latest.env-vars]
 KAFKA_VERSION = "latest"
 ZK_VERSION = "3.6.4"
-# Bump them when you bump the confluent-kafka version
-LIBRDKAFKA_VERSION = "020300"
-CONFLUENT_KAFKA_VERSION = "2.3.0"

kafka_consumer/tests/common.py

@@ -36,15 +36,7 @@
     'docker_volumes': [
         f'{HERE}/docker/ssl/certificate:/tmp/certificate',
         f'{HERE}/docker/kerberos/kdc/krb5_agent.conf:/etc/krb5.conf',
-        f'{HERE}/docker/scripts/install_librdkafka.bash:/tmp/install_librdkafka.bash',
     ],
-    'start_commands': [
-        'bash /tmp/install_librdkafka.bash',
-    ],
-    'env_vars': {
-        'LIBRDKAFKA_VERSION': os.environ["LIBRDKAFKA_VERSION"],
-        'CONFLUENT_KAFKA_VERSION': os.environ["CONFLUENT_KAFKA_VERSION"],
-    },
 }
 
 if AUTHENTICATION == "ssl":