fix: generation of model_oneof for python (#102)

Author: MelvinKl

templates/python/model_anyof.mustache

@@ -133,7 +133,6 @@ class {{classname}}({{#parent}}{{{.}}}{{/parent}}{{^parent}}BaseModel{{/parent}}
             error_messages.append(str(e))
         {{/isPrimitiveType}}
         {{^isPrimitiveType}}
-        # {{vendorExtensions.x-py-name}}: {{{vendorExtensions.x-py-typing}}}
         try:
             instance.actual_instance = {{{dataType}}}.from_json(json_str)
             return instance

templates/python/model_oneof.mustache

@@ -83,10 +83,7 @@ class {{classname}}({{#parent}}{{{.}}}{{/parent}}{{^parent}}BaseModel{{/parent}}
         {{/isPrimitiveType}}
         {{/isContainer}}
         {{/composedSchemas.oneOf}}
-        if match > 1:
-            # more than 1 match
-            raise ValueError("Multiple matches found when setting `actual_instance` in {{{classname}}} with oneOf schemas: {{#oneOf}}{{{.}}}{{^-last}}, {{/-last}}{{/oneOf}}. Details: " + ", ".join(error_messages))
-        elif match == 0:
+        if match == 0:
             # no match
             raise ValueError("No match found when setting `actual_instance` in {{{classname}}} with oneOf schemas: {{#oneOf}}{{{.}}}{{^-last}}, {{/-last}}{{/oneOf}}. Details: " + ", ".join(error_messages))
         else: