Remove unneeded feature flag
Remove unneeded feature flag

djudd/rust-phf,dinfuehr/rust-phf,brson/rust-phf,sfackler/rust-phf,Bobo1239/rust-phf,erickt/rust-phf,erickt/rust-phf,sfackler/rust-phf,dinfuehr/rust-phf,djudd/rust-phf,Bobo1239/rust-phf,brson/rust-phf