adjust mono dll maps

MediaBrowser.Server.Mono/Imazen.WebP.dll.config

@@ -2,5 +2,4 @@
   <dllmap dll="libwebp" target="./libwebp/linux/lib/libwebp.so" os="linux" wordsize="32"/>
   <dllmap dll="libwebp" target="./libwebp/linux/lib64/libwebp.so" os="linux" wordsize="64"/>
   <dllmap dll="libwebp" target="./libwebp/osx/libwebp.5.dylib" os="osx"/>
-  <dllmap dll="libwebp" target="libwebp.so" os="linux" cpu="!x86,!x86_64"/>
 </configuration>

MediaBrowser.Server.Mono/MediaBrowser.MediaInfo.dll.config

@@ -1,4 +1,3 @@
 <configuration>
   <dllmap dll="MediaInfo" target="./MediaInfo/osx/libmediainfo.dylib" os="osx"/>
-  <dllmap dll="MediaInfo" target="libmediainfo.so" os="linux"/>
 </configuration>

MediaBrowser.Server.Mono/System.Data.SQLite.dll.config

@@ -2,5 +2,4 @@
   <dllmap dll="sqlite3" target="./sqlite3/linux/lib/libsqlite3.so.0.8.6" os="linux" wordsize="32"/>
   <dllmap dll="sqlite3" target="./sqlite3/linux/lib64/libsqlite3.so.0.8.6" os="linux" wordsize="64"/>
   <dllmap dll="sqlite3" target="./sqlite3/mac/libsqlite3.0.dylib" os="osx"/>
-  <dllmap dll="sqlite3" target="libsqlite3.so.0.8.6" os="linux" cpu="!x86,!x86_64"/>
 </configuration>