The description of a Gas Spore’s Death Burst [MM p. 138] says (in part):
Spores invade an infected creature’s system, killing the creature in a number of hours equal to 1d12 plus the creature’s constitution score, unless the disease is removed.
It does not say how the disease may be removed.
The DMG is very vague on disease. Regarding removal:
A simple outbreak might amount to little more than a small drain on party resources, curable by casting of lesser restoration. A more complicated outbreak can form the basis of one or more adventures….
What spells, abilities or tools can be used to remove disease where a specific cure is not mentioned in the disease’s description?