Revert "arm_dynarmic: Check if jit is nullptr when preparing reschedule"

src/core/arm/dynarmic/arm_dynarmic.cpp

@@ -248,9 +248,6 @@ void ARM_Dynarmic::LoadContext(const ThreadContext& ctx) {
 }
 
 void ARM_Dynarmic::PrepareReschedule() {
-    if (jit == nullptr)
-        return;
-
     jit->HaltExecution();
 }