Fix lint warnings for unused vars (#1654)

## Checklist

- [ ] I have added
[tests](https://www.cursorless.org/docs/contributing/test-case-recorder/)
- [ ] I have updated the
[docs](https://github.com/cursorless-dev/cursorless/tree/main/docs) and
[cheatsheet](https://github.com/cursorless-dev/cursorless/tree/main/cursorless-talon/src/cheatsheet)
- [ ] I have not broken the cheatsheet

Author: pokey

packages/common/src/types/command/legacy/PartialTargetDescriptorV5.types.ts

@@ -14,10 +14,6 @@ interface NothingMark {
   type: "nothing";
 }
 
-interface LastCursorPositionMark {
-  type: "lastCursorPosition";
-}
-
 interface DecoratedSymbolMark {
   type: "decoratedSymbol";
   symbolColor: string;
@@ -162,18 +158,6 @@ type ScopeType =
   | CustomRegexScopeType
   | OneOfScopeType;
 
-interface ContainingSurroundingPairModifier extends ContainingScopeModifier {
-  scopeType: SurroundingPairScopeType;
-}
-
-interface EverySurroundingPairModifier extends EveryScopeModifier {
-  scopeType: SurroundingPairScopeType;
-}
-
-type SurroundingPairModifier =
-  | ContainingSurroundingPairModifier
-  | EverySurroundingPairModifier;
-
 interface InteriorOnlyModifier {
   type: "interiorOnly";
 }