remove obsolete check for polar in registry

Author: etpinard

src/registry.js

@@ -207,14 +207,6 @@ function mergeComponentAttrsToSubplot(componentName, subplotName) {
  *  module object corresponding to trace type
  */
 exports.getModule = function(trace) {
-    if(trace.r !== undefined) {
-        Loggers.warn('Tried to put a polar trace ' +
-            'on an incompatible graph of cartesian ' +
-            'data. Ignoring this dataset.', trace
-        );
-        return false;
-    }
-
     var _module = exports.modules[getTraceType(trace)];
     if(!_module) return false;
     return _module._module;

test/jasmine/tests/register_test.js

@@ -48,7 +48,6 @@ describe('Test Registry', function() {
         it('should return false for types it doesn\'t know', function() {
             expect(Registry.getModule('notatype')).toBe(false);
             expect(Registry.getModule({type: 'notatype'})).toBe(false);
-            expect(Registry.getModule({type: 'newtype', r: 'this is polar'})).toBe(false);
         });
 
         it('should find the categories for this type', function() {