fix(nvm): remove unused variable (#2579)

Author: Tyriar

src/nvm.ts

@@ -28,10 +28,6 @@ const args: Fig.Arg = {
   isVariadic: true,
 };
 
-const pattern: Fig.Arg = {
-  name: "pattern",
-};
-
 const name: Fig.Arg = {
   name: "name",
 };