$ sudo apt remove konqueror
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
dolphin4 kfind kpart-webkit libkonq-common libkonq5-templates libkonq5abi1
libkonqsidebarplugin4a
Use 'sudo apt autoremove' to remove them.
The following additional packages will be installed:
iceweasel
The following packages will be REMOVED:
konqueror
The following NEW packages will be installed:
iceweasel
0 upgraded, 1 newly installed, 1 to remove and 0 not upgraded.
Need to get 121 kB of archives.
After this operation, 3,388 kB disk space will be freed.
Do you want to continue? [Y/n] n
Abort.