feat: Remove traits from decoder and tests

Author: Alan Christie

decoder/decoder.py

@@ -13,10 +13,6 @@
 import jsonschema
 import yaml
 
-# Supported 'traits'
-TRAIT_COMBINE: str = "combine"
-ALL_TRAITS: Set[str] = {TRAIT_COMBINE}
-
 # The decoding engine implementations.
 # The modules are expected to be called 'decode_<TextEncoding.lower()>'
 from . import decode_jinja2_3_0
@@ -364,12 +360,6 @@ def get_image(job_definition: Dict[str, Any]) -> Tuple[str, str]:
     return image_name, image_tag
 
 
-def get_traits(job_definition: Dict[str, Any]) -> List[Dict[str, Any]]:
-    """Returns the array of Job traits. Each trait proeprty name can be found
-    in the module's ALL_TRAITS set."""
-    return job_definition.get("traits", [])
-
-
 def decode(
     template_text: str,
     variable_map: Optional[Dict[str, str]],