Drop BE support from TargetLoweringObjectFileImpl

Author: djtodoro

llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp

@@ -247,8 +247,6 @@ void TargetLoweringObjectFileELF::Initialize(MCContext &Ctx,
     break;
   case Triple::riscv32:
   case Triple::riscv64:
-  case Triple::riscv32be:
-  case Triple::riscv64be:
     LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
     PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
                           dwarf::DW_EH_PE_sdata4;