Revert "Merge pull request #6929 from ghtmtt/fix_proc_modeler"

There are no useless parameters in Processing.

This reverts commit fd5e0a7, reversing
changes made to 69de345.

src/core/processing/qgsprocessingregistry.cpp

@@ -30,6 +30,7 @@ QgsProcessingRegistry::QgsProcessingRegistry( QObject *parent SIP_TRANSFERTHIS )
   addParameterType( new QgsProcessingParameterTypeCrs() );
   addParameterType( new QgsProcessingParameterTypeRange() );
   addParameterType( new QgsProcessingParameterTypePoint() );
+  addParameterType( new QgsProcessingParameterTypeEnum() );
   addParameterType( new QgsProcessingParameterTypeExtent() );
   addParameterType( new QgsProcessingParameterTypeMatrix() );
   addParameterType( new QgsProcessingParameterTypeFile() ) ;