Remove commented out instructions no longer needed.

chapter06/bash.xml

@@ -42,11 +42,7 @@
 
   <sect2 role="installation">
     <title>Installation of Bash</title>
-<!--
-    <para>First, fix a problem related to cross compilation and gcc-15:</para>
     
-<screen><userinput remap="pre">patch -Np1 -i ../&bash-crosscompile-fix-patch;</userinput></screen>
--->
     <para>Prepare Bash for compilation:</para>
 
 <screen><userinput remap="configure">./configure --prefix=/usr                      \

chapter08/meson.xml

@@ -39,11 +39,7 @@
 
   <sect2 role="installation">
     <title>Installation of Meson</title>
-<!--
-    <para>First, apply a patch that fixes an issue identified upstream:</para>
 
-<screen><userinput remap="pre">patch -Np1 -i ../&meson-fix-patch;</userinput></screen>
--->
     <para>Compile Meson with the following command:</para>
 
 <screen><userinput remap="make">pip3 wheel -w dist --no-cache-dir --no-build-isolation --no-deps $PWD</userinput></screen>

chapter08/perl.xml

@@ -40,11 +40,7 @@
 
   <sect2 role="installation">
     <title>Installation of Perl</title>
-<!--
-    <para>First, apply a security patch identified upstream:</para>
 
-<screen><userinput remap="pre">patch -Np1 -i ../&perl-upstream-fix-patch;</userinput></screen>
--->
     <para>This version of Perl builds the Compress::Raw::Zlib and
     Compress::Raw::BZip2 modules. By
     default Perl will use an internal copy of the sources for the build.

chapter08/xz.xml

@@ -43,11 +43,7 @@
 
   <sect2 role="installation">
     <title>Installation of Xz</title>
-<!--
-    <para>Apply a patch to fix an issue in xzgrep:</para>
 
-<screen><userinput remap="pre">patch -Np1 -i ../&xz-upstream-fix-patch;</userinput></screen>
--->
     <para>Prepare Xz for compilation with:</para>
 
 <screen><userinput remap="configure">./configure --prefix=/usr    \