Remove superfluous bit_cast from TurboAssembler::Fmov

Bug: None
Change-Id: I78bb392d78c9ec968a0763dd9767f4b0ceb374a9
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2157380Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67285}

src/codegen/arm64/macro-assembler-arm64-inl.h

@@ -713,7 +713,7 @@ void TurboAssembler::Fmov(VRegister vd, float imm) {
       } else {
         UseScratchRegisterScope temps(this);
         Register tmp = temps.AcquireW();
-        Mov(tmp, bit_cast<uint32_t>(imm));
+        Mov(tmp, bits);
         Fmov(vd, tmp);
       }
     } else {