clean old it file with 5 workers (#162)

Author: gfournierPro

CHANGELOG.md

@@ -5,7 +5,7 @@
 - Migrate integration test files to Typescript & Hardhat:
     - 000_fullchain.js (#156, #157)
     - 00X_fullchain-Xworkers.js (#158, #159)
-    - 000_fullchain-5workers-1error.js (#160)
+    - 000_fullchain-5workers-1error.js (#160, #162)
 - Remove `smock` from unit tests:
     - IexecEscrow.v8 (#154, #155)
     - IexecPocoDelegate (#149, #151)