Remove duplicated WASM mime type from Nginx config

[stephdl]

Eliminate the duplicated MIME type entry for WASM in the Nginx configuration to streamline the settings.

NethServer/dev#7206

remove the warning

Dec 10 18:24:28 R1.rocky9.org nextcloud-nginx[35832]: 2024/12/10 17:24:28 [warn] 1#1: duplicate extension "wasm", content type: "application/wasm", previous content type: "application/wasm" in /etc/nginx/nginx.conf:16
Dec 10 18:24:28 R1.rocky9.org nextcloud-nginx[35832]: nginx: [warn] duplicate extension "wasm", content type: "application/wasm", previous content type: "application/wasm" in /etc/nginx/nginx.conf:16

wasm is already included in /etc/nginx/mime.types and loaded at this line

/ # grep -srni 'wasm' /etc/nginx/
/etc/nginx/mime.types:55:    application/wasm                                 wasm;
/etc/nginx/nginx.conf:167:        location ~ \.(?:css|js|mjs|svg|gif|ico|jpg|png|webp|wasm|tflite|map|ogg|flac)$ {