Remove "PoW Mining Difficulty" section from documents

Seulgi Kim · sgkim126 · commit 9e0dfe94fa5d · 2019-03-29T23:41:54.000+09:00
diff --git a/docs/consensus-algorithms.rst b/docs/consensus-algorithms.rst
@@ -16,9 +16,3 @@ which is why a variety is being offered.
     tendermint
     blakepow
     cuckoo
-
-#############################
-PoW Mining Difficulty
-#############################
-
-Both BlakePow and Cuckoo are PoW-based consensus models. The mining difficulty is adjusted depending on the timestamp differences of the blocks. If the difference is less than 10 seconds, the difficulty is adjusted upwards. If the timestamp difference is between 10 to 19 seconds, the difficulty is left unchanged. If greater than or equal to 20 seconds, the difficulty is adjusted downwards proportional to the timestamp difference. 
