Remove unused no_std feature

Manishearth · Manishearth · commit 03c709c7f5b3 · 2020-01-01T15:47:25.000+05:30
diff --git a/Cargo.toml b/Cargo.toml
@@ -22,6 +22,5 @@ compiler_builtins = { version = "0.1", optional = true }
 
 [features]
 default = []
-no_std = []
 bench = []
 rustc-dep-of-std = ['std', 'core', 'compiler_builtins']
