feat(core): external authentication related schema changes for existing tables (#3904)

Co-authored-by: hyperswitch-bot[bot] <148525504+hyperswitch-bot[bot]@users.noreply.github.com>

crates/api_models/src/enums.rs

@@ -244,16 +244,6 @@ pub enum FrmConnectors {
     Riskified,
 }
 
-#[cfg(feature = "frm")]
-impl From<FrmConnectors> for RoutableConnectors {
-    fn from(value: FrmConnectors) -> Self {
-        match value {
-            FrmConnectors::Signifyd => Self::Signifyd,
-            FrmConnectors::Riskified => Self::Riskified,
-        }
-    }
-}
-
 #[derive(
     Clone,
     Copy,