UtBS: removed existing story images

[ci skip]

Not up to current standards, and besides, one of them uses the old Kaleh portrait.

data/campaigns/Under_the_Burning_Suns/utils/storytxt.cfg

@@ -6,15 +6,12 @@
             story= _ "Note: This campaign is probably not appropriate for beginners. It changes certain Wesnoth standards, such as the elves’ stats and the day/night cycle. This campaign emphasizes role-playing elements and tends to have longer scenarios with objectives that change in the middle. For these reasons, we strongly suggest that you occasionally save your game mid-scenario, so you won’t lose all your progress if you get stuck and have to start over."
         [/part]
         [part]
-            background="misc/kaleh_story.jpg"
             story= _ "This is the chronicle of the journey of the Quenoth elves from their homeland in the Great Southern Desert. I write this story so that our descendants may know of our travels, remember the sacrifices we made, and profit from the hard lessons we learned."
         [/part]
         [part]
-            background="misc/kaleh_story.jpg"
             story= _ "Chapter 1: I, Kaleh, grew up amid the shifting sands, under our two suns Sela and Naia. It was a land of hot dry days and cold nights, of roaming horrors, where water was more valuable than gold. We had lived among the sands ever since the forests fell uncounted years ago. It was a hard and savage land, but we were tougher still, and we managed to survive settled around one of the rare oases. We had heavily fortified our village against marauders and were the largest encampment we knew of. My uncle, Tanuil, led us for many years, and trained us to be self-sufficient and strong against all enemies. A people struggling in an ocean of sand, we thought we were ready for anything. All that changed one fateful night, when the sky rained fire..."
         [/part]
         [part]
-            background="misc/night_of_fallen_stars.jpg"
             story= _ "I remember that night as if it were yesterday. I was not prone to dreaming, but as I slept I had a strange vision. I didn’t have long to ponder it though, because I was woken in the dark by the sound of deafening crashes, splintering wood and shouting elves. That night the sky rained flaming rocks, boulders bigger than you could imagine. They smote the landscape like lightning bolts, setting fire to whatever could burn and crushing houses, walls, and elves. There was nowhere to hide, nowhere to go for protection. I was terribly afraid, and I thought that if I tried to flee I would be smashed, so I hid and prayed to Eloh. I had never prayed before as fervently as I did that night. I heard cries and screams outside, but I could not force myself to move. Eventually the thin yellow tendrils of a sickly dawn stole over the horizon, as if Naia herself were shocked by the devastation she saw."
         [/part]
     [/story]