LibCore: Remove deprecated LineRange and LineIterator

Userland/Libraries/LibCore/IODevice.cpp

@@ -297,27 +297,4 @@ bool IODevice::write(StringView v)
     return write((u8 const*)v.characters_without_null_termination(), v.length());
 }
 
-LineIterator::LineIterator(IODevice& device, bool is_end)
-    : m_device(device)
-    , m_is_end(is_end)
-{
-    if (!m_is_end) {
-        ++*this;
-    }
-}
-
-bool LineIterator::at_end() const
-{
-    return m_device->eof();
-}
-
-LineIterator& LineIterator::operator++()
-{
-    m_buffer = m_device->read_line();
-    return *this;
-}
-
-LineIterator LineRange::begin() { return m_device.line_begin(); }
-LineIterator LineRange::end() { return m_device.line_end(); }
-
 }

Userland/Libraries/LibCore/IODevice.h

@@ -14,44 +14,6 @@
 
 namespace Core {
 
-class IODevice;
-
-// This is not necessarily a valid iterator in all contexts,
-// if we had concepts, this would be InputIterator, not Copyable, Movable.
-class LineIterator {
-    AK_MAKE_NONCOPYABLE(LineIterator);
-
-public:
-    explicit LineIterator(IODevice&, bool is_end = false);
-
-    bool operator==(LineIterator const& other) const { return &other == this || (at_end() && other.is_end()) || (other.at_end() && is_end()); }
-    bool is_end() const { return m_is_end; }
-    bool at_end() const;
-
-    LineIterator& operator++();
-
-    StringView operator*() const { return m_buffer; }
-
-private:
-    NonnullRefPtr<IODevice> m_device;
-    bool m_is_end { false };
-    DeprecatedString m_buffer;
-};
-
-class LineRange {
-public:
-    LineRange() = delete;
-    explicit LineRange(IODevice& device)
-        : m_device(device)
-    {
-    }
-    LineIterator begin();
-    LineIterator end();
-
-private:
-    IODevice& m_device;
-};
-
 enum class OpenMode : unsigned {
     NotOpen = 0,
     ReadOnly = 1,
@@ -101,13 +63,6 @@ public:
     virtual bool open(OpenMode) = 0;
     virtual bool close();
 
-    LineIterator line_begin() & { return LineIterator(*this); }
-    LineIterator line_end() { return LineIterator(*this, true); }
-    LineRange lines()
-    {
-        return LineRange(*this);
-    }
-
 protected:
     explicit IODevice(Object* parent = nullptr);