[gtksourceview] build: remove useless update-sections gtk-doc target

[Sébastien Wilmet <swilmet src gnome org>]

commit 14519e7cff01c22e22509f4d01518f8499a45d16
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Wed Nov 26 17:35:33 2014 +0100

    build: remove useless update-sections gtk-doc target
    
    The file "unused" is generated when symbols are missing. So it's better
    to move each symbol from "unused" to the right place in "sections".

 docs/reference/Makefile.am |    8 --------
 1 files changed, 0 insertions(+), 8 deletions(-)
---
diff --git a/docs/reference/Makefile.am b/docs/reference/Makefile.am
index 01b90f1..6af4fd9 100644
--- a/docs/reference/Makefile.am
+++ b/docs/reference/Makefile.am
@@ -50,14 +50,6 @@ IGNORE_HFILES =                                      \
        gtksourceview-utils.h                   \
        gtktextregion.h
 
-update-sections: $(HFILE_GLOB)
-       @echo 'gtk-doc: Scanning header files'
-       cp $(DOC_MODULE)-sections.txt $(DOC_MODULE)-sections.txt.old && \
-       (cd $(srcdir) && \
-         gtkdoc-scan --module=$(DOC_MODULE) --source-dir=$(DOC_SOURCE_DIR) 
--ignore-headers="$(IGNORE_HFILES)" --rebuild-sections $(SCAN_OPTIONS) $(EXTRA_HFILES)) && \
-       cp $(DOC_MODULE)-sections.txt $(DOC_MODULE)-sections.txt.new && \
-       mv $(DOC_MODULE)-sections.txt.old $(DOC_MODULE)-sections.txt
-
 # Extra options to supply to gtkdoc-mkdb
 MKDB_OPTIONS = --xml-mode --output-format=xml