More cleanup in stlc_strong_db_parsubst.fst
More cleanup in stlc_strong_db_parsubst.fst

aa755/FStar,aa755/FStar,MallabaevAzamat/FStar,A-Manning/FStar,MallabaevAzamat/FStar,YaccConstructor/FStar,YaccConstructor/FStar,hoheinzollern/FStar,aa755/FStar,FStarLang/FStar,msprotz/FStar,FStarLang/FStar,MallabaevAzamat/FStar,YaccConstructor/FStar,YaccConstructor/FStar,hoheinzollern/FStar,MallabaevAzamat/FStar,msprotz/FStar,A-Manning/FStar,aa755/FStar,FStarLang/FStar,A-Manning/FStar,msprotz/FStar,hoheinzollern/FStar,msprotz/FStar,hoheinzollern/FStar