sudo apt-get remove playonlinux

sudo apt-get purge playonlinux

You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
 libgl1-mesa-dri : Depends: libdrm-amdgpu1 (>= 2.4.89+git1801190630.3509e7~oibaf~x) but 2.4.83-1~16.04.1 is to be installed
 libgl1-mesa-dri:i386 : Depends: libdrm-amdgpu1:i386 (>= 2.4.89+git1801190630.3509e7~oibaf~x) but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).

Sub-process /usr/bin/dpkg returned an error code (1)