Two options... One, play it as is, and the player of the Elf Druid just has to give up on being an archer or using the longsword. Or go with option two, flex your GM muscle and allow the druid access to these weapons.
IMC, I allow Druids some expanded weapon selection. Bows (but not x-bows) are legal weapons as far as my world's druidic circles are concerned. A small number of Elven Druids weild longswords, but for political reasons*. Most other Druids find this practice repugnant, but other than the social sigma, Elf Druids don't loose anything, ie, spells or class abilites.
* = IMC, the elven kingdom of Averoth was once occupied by an invading human nation of Celeste. These humans had a montheistic church which outlawed traditional elven religion (druids), crushed the elf's martial orders and dueling soceities (bladesingers), and was exteremly wary of any elves forming an underground of resistance.
The Church also banned any elves from bearing arms. The traditional elven weapons were a key area of concern for the Church. The thinblade was a smybol of elven royalty, and the raiper favored by wealthy elven duelists. The longsword was a symbol of the elven military and the bladesingers.
When the elves finally won their freedom (after four to five years of hard fought campigning by the PCs) the elven culture rallied around the symbols of their culture, and the heros who freed them.
We still play in this campaign world, albeit in a new edition, and elves tend to regard their longswords like the post-war japanese do the katana. A symbol of national and racial pride, heritage and history.