remove unecessary feature flag
remove unecessary feature flag

# Conflicts:
#	library/alloc/src/lib.rs

graydon/rust,aidancully/rust,aidancully/rust,aidancully/rust,graydon/rust,aidancully/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust