Remove try-catch block

Author: vatsalghelani-csa

scripts/tests/py/metadata.py

@@ -50,12 +50,7 @@ def __init__(self, script_folder, env_file_name):
     def __build_env_object__(self, env_file_name):
 
         with open(env_file_name) as stream:
-            try:
-                env = yaml.safe_load(stream)
-            except yaml.YAMLError as yaml_exception:
-                raise yaml_exception
-
-        return env
+            return yaml.safe_load(stream)
 
     # resolves the run arguments associated with the environment  
     def __resolve_env_vals__(self, metadata_dict):