No, that is normal and nothing to worry about. The Intel(R) HD Graphics 4600 adapter belongs to the integrated graphics built into your CPU. Since you've got a separate graphics card, you shouldn't be using that one currently. But if your GTX 745 dies or if you upgrade it, you'll have to switch to the HD Graphics in order to keep using the computer until you install a new graphics card, so definitely don't uninstall it!