chore(managers/sbt): remove unused types (#21570)

Signed-off-by: Jinna C <jinnatim@gmail.com>

lib/modules/manager/sbt/types.ts

-export interface ParseContext {
-  scalaVersion?: string | null;
-  variables: Record<string, any>;
-  depType?: string;
-}
-
-export interface ParseOptions {
-  isMultiDeps?: boolean;
-  scalaVersion?: string | null;
-  variables?: Record<string, any>;
-}