Fix Ukraine 212.79.122.11 UDP relay and other dead entries

The 212.79.122.11:5014 UDP-relay server (1+1 Ukraina, Inter, 2+2, M1,
Mega, K1, Enter-Film, TET, ДІМ) refuses connections now. Fixed 9
channels with working sources (mostly stream.mcquack.net / antik.sk).
6 more on the same dead server (Bigudi, Novyi Kanal, ПлюсПлюс,
Ми — Україна, Оце ТБ, Піксель TV) had no replacement found - marked
Invalid. Also fixed/cleaned up entries on a separate dead
nashnet.tv/ott.blue/tvstitch.com cluster. Partial progress on #986.

Spain: Televisión Melilla's domain no longer resolves, marked
Invalid (#1012 - no working replacement found for it or Rioja TV).

playlists/playlist_spain.m3u8

@@ -73,8 +73,6 @@ https://bcovlive-a.akamaihd.net/8499d938ef904e39b58a4adec2ddeada/eu-west-1/60579
 https://rtv-murcia-live.globalmest.com/principal/smil:principal.smil/playlist.m3u8
 #EXTINF:-1 tvg-name="Canal 4 Tenerife" tvg-logo="https://i.imgur.com/Egymir4.png" tvg-id="Canal4Tenerife.es" tvg-chno="17" tvg-country="ES" group-title="Spain",Canal 4 Tenerife
 https://videoserver.tmcreativos.com:19360/ccxwhsfcnq/ccxwhsfcnq.m3u8
-#EXTINF:-1 tvg-name="Televisión Melilla" tvg-logo="https://raw.githubusercontent.com/tv-logo/tv-logos/refs/heads/main/countries/spain/television-melilla-es.png" tvg-id="TelevisionMelilla.es" tvg-chno="17" tvg-country="ES" group-title="Spain",Televisión Melilla
-https://tvmelilla-hls-rm-lw.flumotion.com/playlist.m3u8
 #EXTINF:-1 tvg-name="La 1 (Catalunya)" tvg-logo="https://i.imgur.com/NbesiPn.png" tvg-id="La1Catalunya.es" tvg-chno="18" tvg-country="ES" group-title="Spain",La 1 (Catalunya)
 https://rtvelivestream-clnx.rtve.es/rtvesec/cat/la1_cat_main_dvr.m3u8
 #EXTINF:-1 tvg-name="La 1 (Canarias)" tvg-logo="https://i.imgur.com/NbesiPn.png" tvg-id="La1Canarias.es" tvg-chno="19" tvg-country="ES" group-title="Spain",La 1 (Canarias)