No need to declare intrinsics anymore

Signed-off-by: Mikhail R. Gadelha <[email protected]>

Author: mikhailramalho

llvm/test/CodeGen/RISCV/stores-of-loads-merging.ll

@@ -1,7 +1,6 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
 ; RUN: llc < %s -mtriple=riscv64 -mattr=+v | FileCheck %s
 
-declare i32 @llvm.experimental.constrained.fptosi.i32.f64(double, metadata)
 declare void @g()
 
 ; TODO: Merging scalars into vectors is unprofitable because we have no