Remove plugin filter from site output

Signed-off-by: Jarno Elovirta <jarno@elovirta.com>

Author: jelovirt

build.gradle

@@ -151,7 +151,7 @@ task site(type: DitaOtTask) {
     input file("${projectDir}/site.ditamap")
     output getPropertyOrDefault('outputDir', "${buildDir}/site")
     filter "${projectDir}/resources/site.ditaval"
-    filter pluginsDitavalFile
+    // filter pluginsDitavalFile
 
     transtype 'org.dita-ot.html'