System volume root's usage is 92%.

I have tried to remove rsyslog using the "apt-get remove --auto-remove rsyslog" and it is no longer listed in the output of  

------------------

root@NASSB:~# dpkg -l

...

ii rrd-tool 1.6.0-netgea armel minimal time-series data storage

ii rsync 3.1.1-3.netg armel fast, versatile, remote (and loca
rF rsyslog-mysql 5.8.11-3+deb armel MySQL output plugin for rsyslog
ii samba 2:4.4.5-netg armel SMB/CIFS file, print, and login s
ii samba-common 2:4.4.5-netg all common files used by both the Sam

...

------------------

I now try to remove the following and I get errors and the package is not removed

------------------

root@NASSB:~# apt-get remove rsyslog-mysql
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be REMOVED:
rsyslog-mysql
0 upgraded, 0 newly installed, 1 to remove and 33 not upgraded.
1 not fully installed or removed.
After this operation, 183 kB disk space will be freed.
Do you want to continue? [Y/n] y
(Reading database ... 15402 files and directories currently installed.)
Removing rsyslog-mysql (5.8.11-3+deb7u2) ...
debconf: unable to initialize frontend: Dialog
debconf: (No usable dialog-like program is installed, so the dialog based frontend cannot be used. at /usr/share/perl5/Debconf/FrontEnd/Dialog.pm line 76.)
debconf: falling back to frontend: Readline
dpkg: error processing package rsyslog-mysql (--remove):
subprocess installed pre-removal script returned error exit status 10
debconf: unable to initialize frontend: Dialog
debconf: (No usable dialog-like program is installed, so the dialog based frontend cannot be used. at /usr/share/perl5/Debconf/FrontEnd/Dialog.pm line 76.)
debconf: falling back to frontend: Readline
dbconfig-common: flushing administrative password
dpkg: error while cleaning up:
subprocess installed post-installation script returned error exit status 10
Errors were encountered while processing:
rsyslog-mysql
E: Sub-process /usr/bin/dpkg returned an error code (1)
root@NASSB:~#

------------------

I also tried to remove php5 and I get the following

------------------

root@NASSB:~# apt-get remove --auto-remove php5
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
rsyslog-mysql : Depends: rsyslog (= 5.8.11-3+deb7u2) but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).

------------------

I have no experience with this and I am at a loss. Can you please help?

Thanks,

Joel