Update Cargo.lock

flip1995 · flip1995 · commit 10f3cd9bea7f · 2020-05-11T21:18:42.000+02:00
diff --git a/Cargo.lock b/Cargo.lock
@@ -537,7 +537,6 @@ dependencies = [
  "compiletest_rs",
  "derive-new",
  "lazy_static 1.4.0",
- "regex",
  "rustc-workspace-hack",
  "rustc_tools_util 0.2.0",
  "semver",
