Fix smoke rune level requirement in skill calc (#6565)

Sources:
https://imgur.com/a/zyOxNsN
http://oldschoolrunescape.wikia.com/wiki/Smoke_rune
https://oldschool.runescape.wiki/w/Smoke_rune

runelite-client/src/main/resources/net/runelite/client/plugins/skillcalculator/skill_runecraft.json

@@ -90,12 +90,6 @@
       "name": "Water Rune",
       "xp": 6
     },
-    {
-      "level": 5,
-      "icon": 4697,
-      "name": "Smoke Rune",
-      "xp": 9.5
-    },
     {
       "level": 6,
       "icon": 4695,
@@ -126,6 +120,12 @@
       "name": "Fire Rune",
       "xp": 7
     },
+    {
+      "level": 15,
+      "icon": 4697,
+      "name": "Smoke Rune",
+      "xp": 9.5
+    },
     {
       "level": 19,
       "icon": 4694,