Normally you would use the export functionality of svn:

svn export path/to/workingcopy path/to/export

But sometimes Murphy is harsh on you:

svn: This client is too old to work with working copy 'working_copy;
please get a newer Subversion client

A simple method is to remove all .svn Folders from the working copy:

find them:

find -name .svn

kill them:

for i in \$(find -name .svn); do rm -fR \$i ; done

Be aware that rm -fR always is dangerous. So know what you do.