rm obsolete showfilename

pub/share/wups17a.ps

@@ -1373,10 +1373,6 @@ WuGdict17a begin
       add nl_yins 3 2 roll textLM
    newline
    } bind def
-/showfilename { % xins yins size | -
-   setown
-   ooofnam 1 eq { filename textRB } { pop pop } ifelse
-   } def
 /infSet { % oooinfo | - : set whether(1) or not(0) to plot info block
    /oooinfo x def
    } def