Remove unused file: sanitiser/_source.js

It was replaced by the dual purpose sanitiser/_targets.js

sanitiser/_source.js

@@ -1,46 +0,0 @@
-
-var _ = require('lodash'),
-    check = require('check-types'),
-    sources_map = require( '../query/sources' );
-
-var ALL_SOURCES = Object.keys(sources_map),
-    ALL_SOURCES_JOINED = ALL_SOURCES.join(',');
-
-function sanitize( raw, clean ) {
-
-  // error & warning messages
-  var messages = { errors: [], warnings: [] };
-
-  // init clean.types (if not already init)
-  clean.types = clean.types || {};
-
-  // default case (no layers specified in GET params)
-  // don't even set the from_layers key in this case
-  if( check.nonEmptyString( raw.source ) ){
-
-    var sources = raw.source.split(',');
-
-    var invalid_sources = sources.filter(function(source) {
-      return !_.includes( ALL_SOURCES, source );
-    });
-
-    if( invalid_sources.length > 0 ){
-      invalid_sources.forEach( function( invalid ){
-        messages.errors.push('\'' + invalid + '\' is an invalid source parameter. Valid options: ' + ALL_SOURCES_JOINED);
-      });
-    }
-
-    else {
-      var types = sources.reduce(function(acc, source) {
-        return acc.concat(sources_map[source]);
-      }, []);
-
-      clean.types.from_source = types;
-    }
-
-  }
-
-  return messages;
-}
-
-module.exports = sanitize;