fix: remove extraneous declaration in relatedTo (#1095)

- it was specified twice, once grouped with types and typeRoots for some
  reason and missing declarationDir
  - so remove that one, leave in the one that has both declarationDir
    _and_ emitDeclarationOnly
  - second one that remains is ~5 lines below this

Author: agilgur5

packages/tsconfig-reference/scripts/tsconfigRules.ts

@@ -82,7 +82,6 @@ export const relatedTo: [AnOption, AnOption[]][] = [
 
   ["types", ["typeRoots"]],
   ["typeRoots", ["types"]],
-  ["declaration", ["emitDeclarationOnly"]],
 
   ["noLib", ["lib"]],
   ["lib", ["noLib"]],