So, instead of installing localepurge, which takes time to install, and takes up space as an installed app, why not just run in X-term, maybe as root:
rm -r /usr/share/locale/am
rm -r /usr/share/locale/ang
rm -r /usr/share/locale/ar
rm -r /usr/share/locale/az
rm -r /usr/share/locale/be
rm -r /usr/share/locale/bg
rm -r /usr/share/locale/bn
rm -r /usr/share/locale/bs
rm -r /usr/share/locale/ca
rm -r /usr/share/locale/cs
rm -r /usr/share/locale/cy
rm -r /usr/share/locale/da
rm -r /usr/share/locale/da_DK
rm -r /usr/share/locale/de
rm -r /usr/share/locale/de_DE
rm -r /usr/share/locale/dz
rm -r /usr/share/locale/el
rm -r /usr/share/locale/eo
rm -r /usr/share/locale/es
rm -r /usr/share/locale/es_ES
rm -r /usr/share/locale/es_MX
rm -r /usr/share/locale/et
rm -r /usr/share/locale/eu
rm -r /usr/share/locale/eu_ES
rm -r /usr/share/locale/fa
rm -r /usr/share/locale/fi
rm -r /usr/share/locale/fi_FI
rm -r /usr/share/locale/fr
rm -r /usr/share/locale/fr_CA
rm -r /usr/share/locale/fr_FR
rm -r /usr/share/locale/ga
rm -r /usr/share/locale/gl
rm -r /usr/share/locale/gu
rm -r /usr/share/locale/he
rm -r /usr/share/locale/hi
rm -r /usr/share/locale/hr
rm -r /usr/share/locale/hu
rm -r /usr/share/locale/id
rm -r /usr/share/locale/is
rm -r /usr/share/locale/it
rm -r /usr/share/locale/it_IT
rm -r /usr/share/locale/ja
rm -r /usr/share/locale/ka
rm -r /usr/share/locale/kn
rm -r /usr/share/locale/ko
rm -r /usr/share/locale/ku
rm -r /usr/share/locale/ky
rm -r /usr/share/locale/li
rm -r /usr/share/locale/lt
rm -r /usr/share/locale/lv
rm -r /usr/share/locale/mi
rm -r /usr/share/locale/mk
rm -r /usr/share/locale/ml
rm -r /usr/share/locale/mn
rm -r /usr/share/locale/ms
rm -r /usr/share/locale/nb
rm -r /usr/share/locale/ne
rm -r /usr/share/locale/nl
rm -r /usr/share/locale/nl_NL
rm -r /usr/share/locale/nn
rm -r /usr/share/locale/no
rm -r /usr/share/locale/no_NO
rm -r /usr/share/locale/or
rm -r /usr/share/locale/pa
rm -r /usr/share/locale/pl
rm -r /usr/share/locale/pt
rm -r /usr/share/locale/pt_BR
rm -r /usr/share/locale/pt_PT
rm -r /usr/share/locale/ro
rm -r /usr/share/locale/ru
rm -r /usr/share/locale/ru_RU
rm -r /usr/share/locale/rw
rm -r /usr/share/locale/se
rm -r /usr/share/locale/sk
rm -r /usr/share/locale/sl
rm -r /usr/share/locale/sq
rm -r /usr/share/locale/sr
rm -r /usr/share/locale/sr@Latn
rm -r /usr/share/locale/sv
rm -r /usr/share/locale/sv_SE
rm -r /usr/share/locale/ta
rm -r /usr/share/locale/th
rm -r /usr/share/locale/tl
rm -r /usr/share/locale/tr
rm -r /usr/share/locale/ug
rm -r /usr/share/locale/uk
rm -r /usr/share/locale/vi
rm -r /usr/share/locale/wa
rm -r /usr/share/locale/xh
rm -r /usr/share/locale/zh
rm -r /usr/share/locale/zh_CN
rm -r /usr/share/locale/zh_CN.GB2312
rm -r /usr/share/locale/zh_HK
rm -r /usr/share/locale/zh_TW

This will leave the English locales on your tablet, so edit it as you see fit. Takes just a couple of seconds to do.