Merge bitcoin#27151: util: Remove duplicate include

e846269 util: Remove duplicate include (Andrew Chow)

Pull request description:

  Duplicate `#include <utility>` is upsetting the linter.

ACKs for top commit:
  davidgumberg:
    ACK bitcoin@e846269
  theStack:
    ACK e846269
  john-moffett:
    ACK e846269

Tree-SHA512: 9e45d8f6a2dd5efcb8eb1c3c440d94b16490dbd63255784cb39863767fa07227e06da112a150ef337ef89e2e305b60b00d5b1c12ff7e1e9c02f6648ed97fac8c

Author: fanquake

src/support/lockedpool.cpp

@@ -25,7 +25,6 @@
 #include <iomanip>
 #include <iostream>
 #endif
-#include <utility>
 
 LockedPoolManager* LockedPoolManager::_instance = nullptr;