manual: file organization: avoid unnecessary indirection

Some source files of the manual merely contain inclusion of other files.
Especially at top-level this is unnecessary, and one could just as well add
these includes in manual.txt.

Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

docs/manual/developer-guide.txt

@@ -1,12 +0,0 @@
-// -*- mode:doc; -*-
-// vim: set syntax=asciidoc:
-
-include::writing-rules.txt[]
-
-include::adding-packages.txt[]
-
-include::patch-policy.txt[]
-
-include::download-infra.txt[]
-
-include::debugging-buildroot.txt[]

docs/manual/manual.txt

@@ -20,13 +20,23 @@ image::logo.png[]
 
 include::introduction.txt[]
 
-include::starting-up.txt[]
+include::prerequisite.txt[]
+
+include::getting.txt[]
+
+include::using.txt[]
 
 include::get-involved.txt[]
 
 = User guide
 
-include::working-with.txt[]
+include::configure.txt[]
+
+include::configure-other-components.txt[]
+
+include::common-usage.txt[]
+
+include::customize.txt[]
 
 include::faq-troubleshooting.txt[]
 
@@ -40,7 +50,15 @@ include::beyond-buildroot.txt[]
 
 include::how-buildroot-works.txt[]
 
-include::developer-guide.txt[]
+include::writing-rules.txt[]
+
+include::adding-packages.txt[]
+
+include::patch-policy.txt[]
+
+include::download-infra.txt[]
+
+include::debugging-buildroot.txt[]
 
 include::contribute.txt[]
 

docs/manual/starting-up.txt

@@ -1,9 +0,0 @@
-// -*- mode:doc; -*-
-// vim: set syntax=asciidoc:
-
-include::prerequisite.txt[]
-
-include::getting.txt[]
-
-include::using.txt[]
-

docs/manual/working-with.txt

@@ -1,13 +0,0 @@
-// -*- mode:doc; -*-
-// vim: set syntax=asciidoc:
-
-This section explains how you can customize Buildroot to fit your
-needs.
-
-include::configure.txt[]
-
-include::configure-other-components.txt[]
-
-include::common-usage.txt[]
-
-include::customize.txt[]