[RISCV] Xqcilb: remove RISCVMCExpr::VK_QC_E_JUMP_PLT and drop `@plt` parsing#135507

MaskRay merged 2 commits intomainllvm/llvm-project:mainfrom

users/MaskRay/spr/riscv-xqcilb-rename-jump_plt-fixup-and-drop-plt-parsingllvm/llvm-project:users/MaskRay/spr/riscv-xqcilb-rename-jump_plt-fixup-and-drop-plt-parsingCopy head branch name to clipboard