BERLIN, Sept 19 (Reuters) – Germany's interior ministry is planning to force telecoms operators to slash the use of equipment from Huawei (HWT.UL) and ZTE in their 5G networks after a review highlighted an over-reliance on these Chinese suppliers, a government official said. The ministry has designed a staggered approach to avoid too much disruption as operators remove all critical components from Chinese vendors in their 5G core networks by 2026, the official said. The operators, like Deutsche Telekom (DTEGn.DE) and Vodafone (VOD.L), should also reduce the share of Chinese components in their RAN and transport networks by Oct. 1,…