diff --git a/modules/gapi/src/backends/fluid/gfluidbuffer.cpp b/modules/gapi/src/backends/fluid/gfluidbuffer.cpp
index 6672ea2724..1d78a37a44 100644
--- a/modules/gapi/src/backends/fluid/gfluidbuffer.cpp
+++ b/modules/gapi/src/backends/fluid/gfluidbuffer.cpp
@@ -402,20 +402,6 @@ fluid::ViewPrivWithoutOwnBorder::ViewPrivWithoutOwnBorder(const Buffer *parent,
     m_border_size = borderSize;
 }
 
-const uint8_t* fluid::ViewPrivWithoutOwnBorder::InLineB(int index) const
-{
-    GAPI_DbgAssert(m_p);
-
-    const auto &p_priv = m_p->priv();
-
-    GAPI_DbgAssert(index >= -m_border_size
-                && index <  -m_border_size + m_lines_next_iter);
-
-    const int log_idx = m_read_caret + index;
-
-    return p_priv.storage().inLineB(log_idx, m_p->meta().size.height);
-}
-
 void fluid::ViewPrivWithoutOwnBorder::allocate(int lineConsumption, BorderOpt)
 {
     initCache(lineConsumption);
@@ -475,17 +461,6 @@ std::size_t fluid::ViewPrivWithOwnBorder::size() const
     return m_own_storage.size();
 }
 
-const uint8_t* fluid::ViewPrivWithOwnBorder::InLineB(int index) const
-{
-    GAPI_DbgAssert(m_p);
-    GAPI_DbgAssert(index >= -m_border_size
-                && index <  -m_border_size + m_lines_next_iter);
-
-    const int log_idx = m_read_caret + index;
-
-    return m_own_storage.inLineB(log_idx, m_p->meta().size.height);
-}
-
 bool fluid::View::ready() const
 {
     return m_priv->ready();
@@ -641,13 +616,6 @@ int fluid::Buffer::Priv::linesReady() const
     }
 }
 
-uint8_t* fluid::Buffer::Priv::OutLineB(int index)
-{
-    GAPI_DbgAssert(index >= 0 && index < m_writer_lpi);
-
-    return m_storage->ptr(m_write_caret + index);
-}
-
 int fluid::Buffer::Priv::lpi() const
 {
     // FIXME:
diff --git a/modules/gapi/src/backends/fluid/gfluidbuffer_priv.hpp b/modules/gapi/src/backends/fluid/gfluidbuffer_priv.hpp
index 1f3eadc114..5925489ddf 100644
--- a/modules/gapi/src/backends/fluid/gfluidbuffer_priv.hpp
+++ b/modules/gapi/src/backends/fluid/gfluidbuffer_priv.hpp
@@ -197,9 +197,6 @@ public:
 
     // Does the view have enough unread lines for next iteration
     bool ready() const;
-
-    // API used (indirectly) by user code
-    virtual const uint8_t* InLineB(int index) const = 0;
 };
 
 class ViewPrivWithoutOwnBorder final : public View::Priv
@@ -212,9 +209,6 @@ public:
     virtual void prepareToRead() override;
 
     inline virtual std::size_t size() const override { return 0; }
-
-    // API used (indirectly) by user code
-    virtual const uint8_t* InLineB(int index) const override;
 };
 
 class ViewPrivWithOwnBorder final : public View::Priv
@@ -228,9 +222,6 @@ public:
     virtual void allocate(int lineConsumption, BorderOpt border) override;
     virtual void prepareToRead() override;
     virtual std::size_t size() const override;
-
-    // API used (indirectly) by user code
-    virtual const uint8_t* InLineB(int index) const override;
 };
 
 void debugBufferPriv(const Buffer& buffer, std::ostream &os);
@@ -290,7 +281,6 @@ public:
     inline int writer_lpi()     const { return m_writer_lpi; }
 
     // API used (indirectly) by user code
-    uint8_t* OutLineB(int index = 0);
     int lpi() const;
 
     inline int readStart()   const { return m_readStart; }