Remove unused imports

src/InjectBuildCommand.ts

@@ -1,7 +1,6 @@
 import { Command, Option } from "clipanion";
 import { PortablePath, ppath, xfs } from "@yarnpkg/fslib";
 import { createHash } from "crypto";
-import { parseSyml, stringifySyml } from "@yarnpkg/parsers";
 
 import {
   CommandContext,

src/InstallBinCommand.ts

@@ -14,8 +14,6 @@ import binWrapperNodeModulesTmpl from "./tmpl/bin-wrapper-node-modules.sh.in";
 import binWrapperPnpTmpl from "./tmpl/bin-wrapper-pnp.sh.in";
 import { renderTmpl } from "./textUtils";
 
-const supportedLinkers = [`pnp`, `node-modules`];
-
 // Internal command that creates wrappers for binaries.
 // Used inside the Nix install phase.
 export default class InstallBinCommand extends Command<CommandContext> {

src/generate.ts

@@ -1,5 +1,4 @@
 import { Filename, npath, PortablePath, ppath, xfs } from "@yarnpkg/fslib";
-import { parseSyml } from "@yarnpkg/parsers";
 import { patchUtils } from "@yarnpkg/plugin-patch";
 import {
   computeFixedOutputStorePath,