Remove stray vars from crux ascii

ascii/distro/crux_small

 "\
-${c1}    ___${rc}
-${c1}   (${rc}${c3}.·${rc} ${c1}|
-${c1}   (${rc}${c2}<>${rc} ${c1}|
-${c1}  /${rc} ${c3}__${rc}  ${c1}\\
-${c1} (${rc} ${c3}/  \\${rc} ${c1}/|
-${c2}_${c1}/\\${rc} ${c3}__)${rc}${c1}/${rc}${c2}_${rc}${c1})
-${c2}\/${c1}-____${rc}${c2}\/
+${c1}    ___
+${c1}   (${c3}.· ${c1}|
+${c1}   (${c2}<> ${c1}|
+${c1}  / ${c3}__  ${c1}\\
+${c1} ( ${c3}/  \\ ${c1}/|
+${c2}_${c1}/\\ ${c3}__)${c1}/${c2}_${c1})
+${c2}\/${c1}-____${c2}\/
 "