Drop unused code (#14612)

Author: vitstn

ydb/library/yql/providers/dq/common/ya.make

@@ -3,7 +3,6 @@ LIBRARY()
 PEERDIR(
     library/cpp/string_utils/parse_size
     yql/essentials/minikql
-    yql/essentials/sql
     yql/essentials/utils
     yql/essentials/utils/log
     ydb/library/yql/dq/actors

ydb/library/yql/providers/dq/common/yql_dq_common.cpp

@@ -57,32 +57,6 @@ TString GetSerializedResultType(const TString& program) {
     return SerializeNode(programResultItemType, typeEnv);
 }
 
-TMaybe<TString> SqlToSExpr(const TString& query) {
-    NSQLTranslation::TTranslationSettings settings;
-    settings.SyntaxVersion = 1;
-    settings.Mode = NSQLTranslation::ESqlMode::QUERY;
-    settings.DefaultCluster = "undefined";
-    settings.ClusterMapping[settings.DefaultCluster] = "undefined";
-    settings.ClusterMapping["csv"] = "csv";
-    settings.ClusterMapping["memory"] = "memory";
-    settings.ClusterMapping["ydb"] = "ydb";
-    settings.EnableGenericUdfs = true;
-    settings.File = "generated.sql";
-
-    auto astRes = NSQLTranslation::SqlToYql(query, settings);
-    if (!astRes.Issues.Empty()) {
-        Cerr << astRes.Issues.ToString() << Endl;
-    }
-
-    if (!astRes.Root) {
-        return {};
-    }
-
-    TStringStream sexpr;
-    astRes.Root->PrintTo(sexpr);
-    return sexpr.Str();
-}
-
 bool ParseCounterName(TString* prefix, std::map<TString, TString>* labels, TString* name, const TString& counterName) {
     auto pos = counterName.find(":");
     if (pos == TString::npos) {

ydb/library/yql/providers/dq/common/yql_dq_common.h

@@ -17,8 +17,6 @@ struct TResultFormatSettings {
     TMaybe<ui64> RowsLimit;
 };
 
-TMaybe<TString> SqlToSExpr(const TString& query);
-
 TString GetSerializedTypeAnnotation(const NYql::TTypeAnnotationNode* typeAnn);
 TString GetSerializedResultType(const TString& program);