Paradox/toolbox/CollectionManager.php
public function deleteIndex($collection, $indexId)
    {
        try {
            $this->_toolbox->getCollectionHandler()->dropIndex($collection . '/' . $indexId);

            //Invalidate the cached index info for this collection
            unset($this->_indexInfoCache[$collection]);

            return true;
        } catch (\Exception $e) {
            $normalised = $this->_toolbox->normaliseDriverExceptions($e);
            throw new CollectionManagerException($normalised['message'], $normalised['code']);
        }
    }
public function deleteIndex($collection, $indexId)
    {
        try {
            $this->_toolbox->getCollectionHandler()->dropIndex($collection . '/' . $indexId);

            //Invalidate the cached index info for this collection
            unset($this->_indexInfoCache[$collection]);

            return true;
        } catch (\Exception $e) {
            $normalised = $this->_toolbox->normaliseDriverExceptions($e);
            throw new CollectionManagerException($normalised['message'], $normalised['code']);
        }
    }
Delete an index.
@param  string                     $collection The collection the index is on.
@param  string                     $indexId    The id of the index we want to delete.
@throws CollectionManagerException
@return boolean