running live cd (1.0.2) with persistence

cant do full update, runs out of space 4g usb key, 2.5g kali, 1.5g persistence

so discovered that ohashcat-plus was biggest package, thought i'd remove it, update and reinstall it

removing it did this:

root@kali:~# apt-get remove oclhashcat-plus
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following package was automatically installed and is no longer required:
nasm
Use 'apt-get autoremove' to remove it.
The following extra packages will be installed:
nasm
The following packages will be REMOVED:
kali-linux kali-linux-full oclhashcat-plus
The following NEW packages will be installed:
nasm
0 upgraded, 1 newly installed, 3 to remove and 271 not upgraded.
Need to get 1,467 kB of archives.
After this operation, 1,313 MB disk space will be freed.
Do you want to continue [Y/n]? y
Get:1 http://http.kali.org/kali/ kali/main nasm i386 2.10.01-1 [1,467 kB]
Fetched 1,467 kB in 3s (436 kB/s)
(Reading database ... 253702 files and directories currently installed.)
Removing kali-linux-full ...
Removing kali-linux ...
Removing oclhashcat-plus ...
Selecting previously unselected package nasm.
(Reading database ... 251577 files and directories currently installed.)
Unpacking nasm (from .../nasm_2.10.01-1_i386.deb) ...
Processing triggers for man-db ...