Remove debugMode option from WriterProperties

It was related to pdfDebug only.

DEVSIX-5706

Autoported commit.
Original commit hash: [1340151f2]
Manual files:
commons/pom.xml

Author: yulian-gaponenko

itext/itext.kernel/itext/kernel/pdf/PdfWriter.cs

@@ -55,9 +55,6 @@ public class PdfWriter : PdfOutputStream {
 
         private static readonly byte[] endobj = ByteUtils.GetIsoBytes("\nendobj\n");
 
-        // For internal usage only
-        private PdfOutputStream duplicateStream = null;
-
         protected internal WriterProperties properties;
 
         /// <summary>Currently active object stream.</summary>
@@ -97,9 +94,6 @@ public PdfWriter(Stream os)
         public PdfWriter(Stream os, WriterProperties properties)
             : base(new CountOutputStream(FileUtil.WrapWithBufferedOutputStream(os))) {
             this.properties = properties;
-            if (properties.debugMode) {
-                duplicateStream = new PdfOutputStream(new ByteArrayOutputStream());
-            }
         }
 
         /// <summary>Create a PdfWriter writing to the passed filename and with default writer properties.</summary>

itext/itext.kernel/itext/kernel/pdf/WriterProperties.cs

@@ -57,8 +57,6 @@ public class WriterProperties {
         /// </remarks>
         protected internal bool smartMode;
 
-        protected internal bool debugMode;
-
         protected internal bool addXmpMetadata;
 
         protected internal bool addUAXmpMetadata;
@@ -75,7 +73,6 @@ public class WriterProperties {
 
         public WriterProperties() {
             smartMode = false;
-            debugMode = false;
             addUAXmpMetadata = false;
             compressionLevel = CompressionConstants.DEFAULT_COMPRESSION;
             isFullCompression = null;
@@ -340,22 +337,6 @@ public virtual iText.Kernel.Pdf.WriterProperties SetModifiedDocumentId(PdfString
             return this;
         }
 
-        /// <summary>This activates debug mode with pdfDebug tool.</summary>
-        /// <remarks>
-        /// This activates debug mode with pdfDebug tool.
-        /// It causes additional overhead of duplicating document bytes into memory, so use it careful.
-        /// NEVER use it in production or in any other cases except pdfDebug.
-        /// </remarks>
-        /// <returns>
-        /// this
-        /// <see cref="WriterProperties"/>
-        /// instance
-        /// </returns>
-        public virtual iText.Kernel.Pdf.WriterProperties UseDebugMode() {
-            this.debugMode = true;
-            return this;
-        }
-
         /// <summary>This method marks the document as PDF/UA and sets related flags is XMPMetaData.</summary>
         /// <remarks>
         /// This method marks the document as PDF/UA and sets related flags is XMPMetaData.

port-hash

@@ -1 +1 @@
-b698c88ae73deeb8bd4acd055698ebefa17f27a0
+3cc23ad84077bd9c03b15d9eb7ede8f3c6c3054e