diff --git a/src/fileFormats/vtk/output/foamVtkOutput.C b/src/fileFormats/vtk/output/foamVtkOutput.C
index ea5f533cb6771cc439ee10cbeae762dd5d4f7e0a..5311fd0db1d3bb9dd7a793f1e031194026085730 100644
--- a/src/fileFormats/vtk/output/foamVtkOutput.C
+++ b/src/fileFormats/vtk/output/foamVtkOutput.C
@@ -89,101 +89,6 @@ Foam::vtk::newFormatter
 }
 
 
-void Foam::vtk::seriesInfo
-(
-    Ostream& os,
-    const fileName& base,
-    const UList<instant>& series,
-    const char sep
-)
-{
-    // Split the base into (stem, ext) components
-    //
-    // base = "path/file.vtm"
-    //
-    // stem = "file"
-    // ext = ".vtm"
-
-    const word stem = base.nameLessExt();
-    const word ext = "." + base.ext();
-
-    // Begin file-series (JSON)
-    os  << "{\n  \"file-series-version\" : \"1.0\",\n  \"files\" : [\n";
-
-    // Track how many entries are remaining
-    // - trailing commas on all but the final entry (JSON requirement)
-    label nremain = series.size();
-
-    // Each entry
-    //   { "name" : "<stem><sep>name<ext>",  "time" : value }
-
-    for (const instant& inst : series)
-    {
-        os  << "    { \"name\" : \""
-            << stem << sep << inst.name() << ext
-            << "\", \"time\" : " << inst.value() << " }";
-
-        if (--nremain)
-        {
-            os  << ',';
-        }
-        os  << nl;
-    }
-
-    os  << "  ]\n}\n";
-}
-
-
-void Foam::vtk::seriesWrite
-(
-    const fileName& base,
-    const UList<instant>& series,
-    const char sep
-)
-{
-    mkDir(base.path());
-
-    autoPtr<OFstream> osPtr =
-    (
-        base.hasExt("series")
-      ? autoPtr<OFstream>::New(base)
-      : autoPtr<OFstream>::New(base + ".series")
-    );
-
-    seriesInfo(*osPtr, base, series, sep);
-}
-
-
-Foam::fileName Foam::vtk::seriesBase
-(
-    const fileName& outputName,
-    const char sep
-)
-{
-    const auto dash = outputName.rfind(sep);
-
-    // No separator? Or separator in path() instead of name()?
-    if
-    (
-        std::string::npos == dash
-     || std::string::npos != outputName.find('/', dash)
-    )
-    {
-        // Warn?
-        return outputName;
-    }
-
-    const auto dot = outputName.find('.', dash);
-
-    if (std::string::npos == dot)
-    {
-        return outputName.substr(0, dash);
-    }
-
-    return outputName.substr(0, dash) + outputName.substr(dot);
-}
-
-
 void Foam::vtk::writeList
 (
     vtk::formatter& fmt,
diff --git a/src/fileFormats/vtk/output/foamVtkOutput.H b/src/fileFormats/vtk/output/foamVtkOutput.H
index 9cd5434847a8aedefe6397973890d839fe90a601..4696a4089056785de0abc2c0e2ec6c7cd4b48969 100644
--- a/src/fileFormats/vtk/output/foamVtkOutput.H
+++ b/src/fileFormats/vtk/output/foamVtkOutput.H
@@ -84,40 +84,6 @@ namespace vtk
     );
 
 
-    //- Print file series (JSON format) for specified time instances
-    //
-    //  \param os     The output stream
-    //  \param base   The name for the series (eg, "path/file.vtm")
-    //  \param series The list of suffix/value entries
-    //  \param sep    The separator used between file stem and suffix.
-    void seriesInfo
-    (
-        Ostream& os,
-        const fileName& base,
-        const UList<instant>& series,
-        const char sep = '_'
-    );
-
-    //- Write file series (JSON format) to disk, for specified time instances
-    //
-    //  \param base   The name for the series (eg, "path/file.vtm")
-    //  \param series The list of suffix/value entries
-    //  \param sep    The separator used between file stem and suffix.
-    void seriesWrite
-    (
-        const fileName& base,
-        const UList<instant>& series,
-        const char sep = '_'
-    );
-
-    //- Extract the base name for a file series
-    //
-    //  \param outputName   The name of the data output file
-    //      Eg, "somefile_0001.vtm" would extract to "somefile.vtm"
-    //  \param sep    The separator used between file stem and suffix.
-    fileName seriesBase(const fileName& outputName, const char sep = '_');
-
-
     //- Write a list of uint8_t values.
     //  The output does not include the payload size.
     void writeList