Removed 'proc' keyword
As per
@@ -75,7 +75,6 @@ them to use these keywords.
> KW_OFFSETOF : `offsetof`
> KW_OVERRIDE : `override`
> KW_PRIV : `priv`
-> KW_PROC : `proc`
> KW_PURE : `pure`
> KW_SIZEOF : `sizeof`
> KW_TYPEOF : `typeof`
