libutil: remove some unused code

the vaccum bits have been commented since 2014(!)

Change-Id: I55c6318413be3c3f5d0099b58d58932374a3a008

lix/libstore/gc.cc

@@ -856,9 +856,6 @@ void LocalStore::collectGarbage(const GCOptions & options, GCResults & results)
         printInfo("note: currently hard linking saves %.2f MiB",
             ((unsharedSize - actualSize - overhead) / (1024.0 * 1024.0)));
     }
-
-    /* While we're at it, vacuum the database. */
-    //if (options.action == GCOptions::gcDeleteDead) vacuumDB();
 }
 
 

lix/libstore/local-store.cc

@@ -1753,13 +1753,6 @@ void LocalStore::upgradeStore7()
 #endif
 
 
-void LocalStore::vacuumDB()
-{
-    auto state(_state.lock());
-    state->db.exec("vacuum");
-}
-
-
 void LocalStore::addSignatures(const StorePath & storePath, const StringSet & sigs)
 {
     retrySQLite<void>([&]() {

lix/libstore/local-store.hh

@@ -276,8 +276,6 @@ public:
 
     std::optional<TrustedFlag> isTrustedClient() override;
 
-    void vacuumDB();
-
     void addSignatures(const StorePath & storePath, const StringSet & sigs) override;
 
     /**

lix/libstore/nar-accessor.cc

@@ -41,8 +41,6 @@ struct NarAccessor : public FSAccessor
 
         std::stack<NarMember *> parents;
 
-        bool isExec = false;
-
         uint64_t pos = 0;
 
     public:

lix/libutil/archive.cc

@@ -157,17 +157,6 @@ static SerialisationError badArchive(const std::string & s)
 }
 
 
-#if 0
-static void skipGeneric(Source & source)
-{
-    if (readString(source) == "(") {
-        while (readString(source) != ")")
-            skipGeneric(source);
-    }
-}
-#endif
-
-
 struct CaseInsensitiveCompare
 {
     bool operator() (const std::string & a, const std::string & b) const