You need a dedicated software to remove a specific part of your video, so a solution that you can turn to is the Microsoft Video Editor. The main windows of the application are designed to be as intuitive as possible. You basically need to set up a list of source files, then customize the length of each of them.
The downside is that you can't drag and drop your tracks into the Windows Video Editor window, so you'll need to browse to their location individually. When it comes to adding files to the main window, you can choose from a wide range of video source formats like MP4, MPEG, MPG, ASF, AVI, FLV, M2TS, M4V, MKV, MOD, MOV, MTS, etc, 3GP, RMVB, Todd, TRP, VOB, WMV, and others.