remove shouldForceRelocation declaration

Author: zhaoqi5

llvm/lib/Target/LoongArch/MCTargetDesc/LoongArchAsmBackend.h

@@ -44,8 +44,6 @@ class LoongArchAsmBackend : public MCAsmBackend {
   void applyFixup(const MCFragment &, const MCFixup &, const MCValue &Target,
                   uint8_t *Data, uint64_t Value, bool IsResolved) override;
 
-  bool shouldForceRelocation(const MCFixup &Fixup, const MCValue &Target);
-
   std::optional<MCFixupKind> getFixupKind(StringRef Name) const override;
 
   MCFixupKindInfo getFixupKindInfo(MCFixupKind Kind) const override;