* Rwandan Hutu rebels say they are laying down arms in Congo
* U.N. peacekeepers say no evidence of disarmament yet
* Rwanda seeks "eradication" of rebels in Congo's east
By Chrispin Mvano
GOMA, Democratic Republic of Congo, Feb 4 (Reuters) - Senior members of a Rwandan Hutu rebel force based in eastern Congo said on Tuesday they had started laying down their arms and were ready for ...