remove config files for decoding

conf/decode.config

-# empty config, just use the defaults.

conf/queue_no_k20.conf

-# Default configuration
-command qsub -v PATH -cwd -S /bin/bash -j y -l arch=*64*
-option mem=* -l mem_free=$0,ram_free=$0
-option mem=0          # Do not add anything to qsub_opts
-option num_threads=* -pe smp $0
-option num_threads=1  # Do not add anything to qsub_opts
-option max_jobs_run=* -tc $0
-default gpu=0
-option gpu=0 -q all.q
-option gpu=* -l gpu=$0 -q g.q
-default allow_k20=true
-option allow_k20=true
-option allow_k20=false -l 'hostname=!g01*&!g02*&!b06*'