[llvm] [AArch64][GISEL] Reduce likelihood of hash collisions for mappings in RegisterBankInfo (PR #87033)

[Matt Arsenault via llvm-commits]

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@@ -28,7 +28,6 @@
 #include <cstring>
 #include <initializer_list>
 #include <iterator>
-#include <new>
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arsenm wrote:

Unrelated change? Push this separately? 

https://github.com/llvm/llvm-project/pull/87033