Revert "metrics have been added"

This reverts commit 16e792be75335b09a4f9f254e3972030af83b1ad, reversing
changes made to 3790f3d771d1a65ed6c0d05f3e0d79ff13308142.

3 files changed, 0 insertions, 155 deletions

diff --git a/library/cpp/string_utils/secret_string/secret_string.cpp b/library/cpp/string_utils/secret_string/secret_string.cpp
deleted file mode 100644
index 3b68d3cd274..00000000000
--- a/library/cpp/string_utils/secret_string/secret_string.cpp
+++ /dev/null
@@ -1,68 +0,0 @@
-#include "secret_string.h"
-
-#include <util/system/madvise.h>
-
-namespace NSecretString {
-    TSecretString::TSecretString(TStringBuf value) {
-        Init(value);
-    }
-
-    TSecretString::~TSecretString() {
-        try {
-            Clear();
-        } catch (...) {
-        }
-    }
-
-    TSecretString& TSecretString::operator=(const TSecretString& o) {
-        if (&o == this) {
-            return *this;
-        }
-
-        Init(o.Value_);
-
-        return *this;
-    }
-
-    /**
-     * It is not honest "move". Actually it is copy-assignment with cleaning of other instance.
-     * This way allowes to avoid side effects of string optimizations:
-     *   Copy-On-Write or Short-String-Optimization
-     */
-    TSecretString& TSecretString::operator=(TSecretString&& o) {
-        if (&o == this) {
-            return *this;
-        }
-
-        Init(o.Value_);
-        o.Clear();
-
-        return *this;
-    }
-
-    TSecretString& TSecretString::operator=(const TStringBuf o) {
-        Init(o);
-
-        return *this;
-    }
-
-    void TSecretString::Init(TStringBuf value) {
-        Clear();
-        if (value.empty()) {
-            return;
-        }
-
-        Value_ = value;
-        MadviseExcludeFromCoreDump(Value_);
-    }
-
-    void TSecretString::Clear() {
-        if (Value_.empty()) {
-            return;
-        }
-
-        SecureZero((void*)Value_.data(), Value_.size());
-        MadviseIncludeIntoCoreDump(Value_);
-        Value_.clear();
-    }
-}
diff --git a/library/cpp/string_utils/secret_string/secret_string.h b/library/cpp/string_utils/secret_string/secret_string.h
deleted file mode 100644
index fdb9f6a85ce..00000000000
--- a/library/cpp/string_utils/secret_string/secret_string.h
+++ /dev/null
@@ -1,74 +0,0 @@
-#pragma once
-
-#include <library/cpp/string_utils/ztstrbuf/ztstrbuf.h>
-
-#include <util/generic/string.h>
-
-namespace NSecretString {
-    /**
-     * TSecretString allowes to store some long lived secrets in "secure" storage in memory.
-     * Common usage:
-     *  1) read secret value from disk/env/etc
-     *  2) put it into TSecretString
-     *  3) destory secret copy from 1)
-     *
-     * Useful scenerios for TSecretString:
-     *   - in memory only tasks: using key to create crypto signature;
-     *   - rare network cases: db password on connection or OAuth token in background tasks.
-     *     These cases disclosure the secret
-     *       because of sending it over network with some I/O frameworks.
-     *     Usually such frameworks copy input params to provide network protocol: gRPC, for example.
-     *
-     * Supported features:
-     *  1. Exclude secret from core dump.
-     *     madvise(MADV_DONTDUMP) in ctor excludes full memory page from core dump.
-     *     madvise(MADV_DODUMP) in dtor reverts previous action.
-     *  2. Zero memory before free.
-     *
-     * Code dump looks like this:
-(gdb) print s
-$1 = (const TSecretString &) @0x7fff23c4c560: {
-  Value_ = {<TStringBase<TBasicString<char, std::__y1::char_traits<char> >, char, std::__y1::char_traits<char> >> = {
-      static npos = <optimized out>}, Data_ = 0x107c001d8 <error: Cannot access memory at address 0x107c001d8>}}
-     */
-
-    class TSecretString {
-    public:
-        TSecretString() = default;
-        TSecretString(TStringBuf value);
-        ~TSecretString();
-
-        TSecretString(const TSecretString& o)
-            : TSecretString(o.Value())
-        {
-        }
-
-        TSecretString(TSecretString&& o)
-            : TSecretString(o.Value())
-        {
-            o.Clear();
-        }
-
-        TSecretString& operator=(const TSecretString& o);
-        TSecretString& operator=(TSecretString&& o);
-
-        TSecretString& operator=(const TStringBuf o);
-
-        operator TZtStringBuf() const {
-            return Value();
-        }
-
-        // Provides zero terminated string
-        TZtStringBuf Value() const {
-            return TZtStringBuf(Value_);
-        }
-
-    private:
-        // TStringBuf breaks Copy-On-Write to provide correct copy-ctor and copy-assignment
-        void Init(TStringBuf value);
-        void Clear();
-
-    private:
-        TString Value_;
-    };
-}
diff --git a/library/cpp/string_utils/secret_string/ya.make b/library/cpp/string_utils/secret_string/ya.make
deleted file mode 100644
index c1d43f7a1d5..00000000000
--- a/library/cpp/string_utils/secret_string/ya.make
+++ /dev/null
@@ -1,13 +0,0 @@
-LIBRARY()
-
-SRCS(
-    secret_string.cpp
-)
-
-PEERDIR(
-    library/cpp/string_utils/ztstrbuf
-)
-
-END()
-
-RECURSE_FOR_TESTS(ut)