Revert "Adapt to llvm/llvm-project#96785"

This reverts commit 0c0bd04.

src/disasm.cpp

@@ -1178,11 +1178,7 @@ class LineNumberPrinterHandler : public AsmPrinterHandler {
         Buffer.clear();
     }
 
-#if JL_LLVM_VERSION >= 190000
-    virtual void setSymbolSize(const MCSymbol *Sym, uint64_t Size) {}
-#else
     virtual void setSymbolSize(const MCSymbol *Sym, uint64_t Size) override {}
-#endif
     //virtual void beginModule(Module *M) override {}
     virtual void endModule() override {}
     /// note that some AsmPrinter implementations may not call beginFunction at all
@@ -1201,19 +1197,11 @@ class LineNumberPrinterHandler : public AsmPrinterHandler {
     //virtual void beginFunclet(const MachineBasicBlock &MBB,
     //                          MCSymbol *Sym = nullptr) override {}
     //virtual void endFunclet() override {}
-#if JL_LLVM_VERSION >= 190000
-    virtual void beginInstruction(const MachineInstr *MI) {
-#else
     virtual void beginInstruction(const MachineInstr *MI) override {
-#endif
         LinePrinter.emitInstructionAnnot(MI->getDebugLoc(), Stream);
         emitAndReset();
     }
-#if JL_LLVM_VERSION >= 190000
-    virtual void endInstruction() {}
-#else
     virtual void endInstruction() override {}
-#endif
 };
 
 // get a native assembly for llvm::Function