localstack
diff --git a/‎localstack-core/localstack/config.py
Lines changed: 0 additions & 7 deletions b/‎localstack-core/localstack/config.py
Lines changed: 0 additions & 7 deletions
diff --git a/‎localstack-core/localstack/deprecations.py
Lines changed: 11 additions & 14 deletions b/‎localstack-core/localstack/deprecations.py
Lines changed: 11 additions & 14 deletions
diff --git a/‎localstack-core/localstack/services/lambda_/event_source_listeners/__init__.py b/‎localstack-core/localstack/services/lambda_/event_source_listeners/__init__.py
diff --git a/‎localstack-core/localstack/services/lambda_/event_source_listeners/adapters.py
Lines changed: 0 additions & 263 deletions b/‎localstack-core/localstack/services/lambda_/event_source_listeners/adapters.py
Lines changed: 0 additions & 263 deletions
@@ -961,9 +961,6 @@ def populate_edge_configuration(
 # Additional flags passed to Docker run|create commands.
 LAMBDA_DOCKER_FLAGS = os.environ.get("LAMBDA_DOCKER_FLAGS", "").strip()
 
-# PUBLIC: v2 (default), v1 (deprecated) Version of the Lambda Event Source Mapping implementation
-LAMBDA_EVENT_SOURCE_MAPPING = os.environ.get("LAMBDA_EVENT_SOURCE_MAPPING", "v2").strip()
-
 # PUBLIC: 0 (default)
 # Enable this flag to run cross-platform compatible lambda functions natively (i.e., Docker selects architecture) and
 # ignore the AWS architectures (i.e., x86_64, arm64) configured for the lambda function.
@@ -1039,10 +1036,6 @@ def populate_edge_configuration(
     )  # the 100 comes from the init defaults
 )
 
-LAMBDA_SQS_EVENT_SOURCE_MAPPING_INTERVAL_SEC = float(
-    os.environ.get("LAMBDA_SQS_EVENT_SOURCE_MAPPING_INTERVAL_SEC") or 1.0
-)
-
 # DEV: 0 (default unless in host mode on macOS) For LS developers only. Only applies to Docker mode.
 # Whether to explicitly expose a free TCP port in lambda containers when invoking functions in host mode for
 # systems that cannot reach the container via its IPv4. For example, macOS cannot reach Docker containers:
 
@@ -281,6 +281,17 @@ def is_affected(self) -> bool:
         "This option is ignored because the LocalStack SQS dependency for event invokes has been removed since 4.0.0"
         " in favor of a lightweight Lambda-internal SQS implementation.",
     ),
+    EnvVarDeprecation(
+        "LAMBDA_EVENT_SOURCE_MAPPING",
+        "4.0.0",
+        "This option has no effect anymore. Please remove this environment variable.",
+    ),
+    EnvVarDeprecation(
+        "LAMBDA_SQS_EVENT_SOURCE_MAPPING_INTERVAL_SEC",
+        "4.0.0",
+        "This option is not supported by the new Lambda Event Source Mapping v2 implementation."
+        " Please create a GitHub issue if you experience any performance challenges.",
+    ),
 ]
 
 
@@ -328,20 +339,6 @@ def log_deprecation_warnings(deprecations: Optional[List[EnvVarDeprecation]] = N
     affected_deprecations = collect_affected_deprecations(deprecations)
     log_env_warning(affected_deprecations)
 
-    feature_override_lambda_esm = os.environ.get("LAMBDA_EVENT_SOURCE_MAPPING")
-    if feature_override_lambda_esm and feature_override_lambda_esm in ["v1", "legacy"]:
-        env_var_value = f"LAMBDA_EVENT_SOURCE_MAPPING={feature_override_lambda_esm}"
-        deprecation_version = "3.8.0"
-        deprecation_path = (
-            f"Remove {env_var_value} to use the new Lambda Event Source Mapping implementation."
-        )
-        LOG.warning(
-            "%s is deprecated (since %s) and will be removed in upcoming releases of LocalStack! %s",
-            env_var_value,
-            deprecation_version,
-            deprecation_path,
-        )
-
 
 def deprecated_endpoint(
     endpoint: Callable, previous_path: str, deprecation_version: str, new_path: str