chore(api,core): remove dead enricher schemas, unreachable wobbly_type branch, dead set_params()

EnricherCreate/EnricherRead/EnricherUpdate had no importer anywhere in the
repo and were the whole content of app/api/schemas/enricher.py, so the module
goes with them.

get_enrichers' custom-type branch returns [] before reaching the
wobbly_type=True registry listing. The early return stays (why a published
custom type lists no enrichers is a separate question); the line it strands
does not.

EnricherBase.set_params() had no caller and no dynamic-dispatch site;
resolve_params/async_init assign self.params directly.

flowsint-api/app/api/schemas/enricher.py

@@ -1,27 +0,0 @@
-from typing import Any, Dict, List, Optional
-
-from pydantic import UUID4, BaseModel
-
-from .base import ORMBase
-
-
-class EnricherCreate(BaseModel):
-    name: str
-    description: Optional[str] = None
-    category: Optional[List[str]] = None
-
-
-class EnricherRead(ORMBase):
-    id: UUID4
-    name: str
-    class_name: str
-    description: Optional[str]
-    category: Optional[List[str]]
-    flow_schema: Optional[Dict[str, Any]]
-
-
-class EnricherUpdate(BaseModel):
-    name: Optional[str] = None
-    class_name: Optional[str] = None
-    description: Optional[str] = None
-    category: Optional[List[str]] = None

flowsint-core/src/flowsint_core/core/enricher_base.py

@@ -339,9 +339,6 @@ class Enricher(ABC):
     async def scan(self, values: List[str]) -> List[Dict[str, Any]]:
         pass
 
-    def set_params(self, params: Dict[str, Any]) -> None:
-        self.params = params
-
     def get_params(self) -> Dict[str, Any]:
         return self.params
 

flowsint-core/src/flowsint_core/core/services/enricher_service.py

@@ -69,7 +69,6 @@ class EnricherService(BaseService):
 
         if custom_type:
             return []
-            return enricher_registry.list(exclude=["n8n_connector"], wobbly_type=True)
 
         by_input_type: List[Dict[str, Any]] = enricher_registry.list_by_input_type(
             category, exclude=["n8n_connector"]