remove mime types already set by jetty

apps/i2psnark/mime.properties

 7z	= application/x-7z-compressed
 ape	= audio/x-monkeys-audio
-avi	= video/x-msvideo
-bz2	= application/x-bzip2
 dmg	= application/apple-diskimage
-doc	= application/msword
 flac	= audio/flac
 flv	= video/x-flv
 iso	= application/x-iso9660-image
-jar	= application/java-archive
 m4a	= audio/mp4a-latm
 m4v	= video/x-m4v
 mkv	= video/x-matroska
 mp4	= video/mp4
 mpc	= audio/x-musepack
-mpg	= video/mpeg
 nfo	= text/plain
 ogm	= video/ogg
 ogv	= video/ogg
 oga	= audio/ogg
-pdf	= application/pdf
 rar	= application/x-rar-compressed
-sh	= application/x-sh
 su2	= application/zip
 sud	= application/zip
-tar	= application/x-tar
-tgz	= application/gtar-compressed
 txt	= text/plain
 war	= application/java-archive
-wav	= audio/x-wav
 wma	= audio/x-ms-wma
 wmv	= video/x-ms-wmv