chore: remove redundant manual schema validation

Schema validation is automatically checked and reported through
cloud-init status. Eliminate unnecessary manual verification as well as
the autoinstall key check which is unnecessary due to activation_key.

cloudinit/config/cc_ubuntu_autoinstall.py

@@ -10,8 +10,6 @@
 from cloudinit.config import Config
 from cloudinit.config.schema import (
     MetaSchema,
-    SchemaProblem,
-    SchemaValidationError,
 )
 from cloudinit.settings import PER_ONCE
 
@@ -30,13 +28,6 @@
 
 def handle(name: str, cfg: Config, cloud: Cloud, args: list) -> None:
 
-    if "autoinstall" not in cfg:
-        LOG.debug(
-            "Skipping module named %s, no 'autoinstall' key in configuration",
-            name,
-        )
-        return
-
     util.wait_for_snap_seeded(cloud)
     snap_list, _ = subp.subp(["snap", "list"])
     installer_present = None
@@ -50,51 +41,7 @@ def handle(name: str, cfg: Config, cloud: Cloud, args: list) -> None:
             ", ".join(LIVE_INSTALLER_SNAPS),
         )
         return
-    validate_config_schema(cfg)
     LOG.debug(
         "Valid autoinstall schema. Config will be processed by %s",
         installer_present,
     )
-
-
-def validate_config_schema(cfg):
-    """Supplemental runtime schema validation for autoinstall yaml.
-
-    Schema validation issues currently result in a warning log currently which
-    can be easily ignored because warnings do not bubble up to cloud-init
-    status output.
-
-    In the case of the live-installer, we want cloud-init to raise an error
-    to set overall cloud-init status to 'error' so it is more discoverable
-    in installer environments.
-
-    # TODO(Drop this validation When cloud-init schema is strict and errors)
-
-    :raise: SchemaValidationError if any known schema values are present.
-    """
-    autoinstall_cfg = cfg["autoinstall"]
-    if not isinstance(autoinstall_cfg, dict):
-        raise SchemaValidationError(
-            [
-                SchemaProblem(
-                    "autoinstall",
-                    "Expected dict type but found:"
-                    f" {type(autoinstall_cfg).__name__}",
-                )
-            ]
-        )
-
-    if "version" not in autoinstall_cfg:
-        raise SchemaValidationError(
-            [SchemaProblem("autoinstall", "Missing required 'version' key")]
-        )
-    elif not isinstance(autoinstall_cfg.get("version"), int):
-        raise SchemaValidationError(
-            [
-                SchemaProblem(
-                    "autoinstall.version",
-                    f"Expected int type but found:"
-                    f" {type(autoinstall_cfg['version']).__name__}",
-                )
-            ]
-        )