sudo apt-get purge libc6:i386

gigabyte@GA-880GM-USB3:~/AndroidSDK/platform-tools$ sudo apt-get purge  libc6:i386 libncurses5:i386 libstdc++6:i386
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be REMOVED:
  libc6:i386* libgcc1:i386* libgpm2:i386* libncurses5:i386* libstdc++6:i386*
  libtinfo5:i386*
0 upgraded, 0 newly installed, 6 to remove and 240 not upgraded.
After this operation, 11.6 MB disk space will be freed.
Do you want to continue [Y/n]? y
(Reading database ... 152064 files and directories currently installed.)
Removing libncurses5:i386 ...
Purging configuration files for libncurses5:i386 ...
Removing libtinfo5:i386 ...
Purging configuration files for libtinfo5:i386 ...
Removing libstdc++6:i386 ...
Purging configuration files for libstdc++6:i386 ...
Removing libgpm2:i386 ...
Purging configuration files for libgpm2:i386 ...
Removing libc6:i386 ...
Purging configuration files for libc6:i386 ...
Removing libgcc1:i386 ...
Purging configuration files for libgcc1:i386 ...
Processing triggers for libc-bin ...
ldconfig deferred processing now taking place
gigabyte@GA-880GM-USB3:~/AndroidSDK/platform-tools$