ABU DHABI (Reuters) - OPEC and non-OPEC producers will probably extend a deal to limit crude supply but are unlikely to deepen cuts, Oman's energy minister said on Monday, as the United Arab Emirates said it was not worried about long-term oil demand growth.The Organization of the Exporting Producing Countries, Russia and other oil producer allies - a group known as OPEC+ - have since January implemented an agreement to cut output by 1.2 million barrels per day until March 2020 in an attempt to..