Saumadeep
Ansys Employee
Hi @shinwari
To selectively uninstall Ansys products you can refer to this -
Chapter 9: Uninstalling the Software (ansys.com), where you need to follow the steps shown in "Uninstall Procedure for All Users"
  P.S - It's preferred to use Recommended hardware (Mentioned below) for best performance, also uninstalling everything but the workbench won't be beneficial, as the workbench is a platform for all the tools.
Minimum hardware requirements(Download Ansys Student | Workbench-based Simulation Tools)-
Processor(s): Workstation class
4 GB RAM
25 GB hard drive space
The computer must have a physical C:/” drive present
Graphics card and driver: Professional workstation class 3-D
OpenGL-capable
 
Regards
Saumadeep