Windows does have a Disk Management tool for simple disk management operations. For USB drive or logical drive, if the drive already has more than one partition, Disk Management will not allow you manage extra partitions on removable storage devices, unless you deleted all of the partitions and make a new, full size partition. Disk Management will not provide delete volume option for extra partitions on USB drives if more than one partition is detected. 
How to combine two partitions or more into one and restore USB drive to it’s original state? To delete partitions on USB drive, you will need to use the command-line utility: Diskpart. Diskpart enhances the Disk Management graphical user interface (GUI). Below guide is for Windows systems only. For MacOS, you can have similar solution here Caution: When you use DiskPart to clean USB drive partition, all data on the USB will be erased.