An island holiday has led to the resignation of a conservative minister in North Rhine Westphalia on Thursday, just five weeks before elections are due to be held in Germany’s most populous state. North Rhine Westphalia’s Environment Minister Ursula Heinen-Esser said she had offered her resignation to state Premier Hendrik Wüst, also a Christian Democrat, and that he had accepted it. Heinen-Esser was under growing pressure after going on holiday last summer as devastating floods hit her state and several others. She was celebrating her husband’s birthday in Mallorca with other members of the s…