Update README.md

Author: CompRhys

aviary/embeddings/wyckoff/README.md

@@ -8,11 +8,3 @@ A 6 + 5 + 185 + 248 = 444 dimensional embedding encoding
 - unit cell centering
 - the sum of whether sites in a wyckoff position sit on lines, planes or in volumes
 - the specific offset of that wyckoff position within the unit cell
-
-## spg-alg-off
-
-A 230 + 185 + 248 = 663 dimensional embedding consisting of
-
-- a OHE of the spacegroup
-- the sum of whether sites in a wyckoff position sit on lines, planes or in volumes
-- the specific offset of that wyckoff position within the unit cell