[dia/neduard/update_dev_docs: 17/17] #30: Remove dependencies automatically pulled in by GTK2.

[Eduard <neduard src gnome org>]

commit f0f742ee26a6ef1c0c1c2a980e03b5c00030006d
Author: Eduard <eddnicodei gmail com>
Date:   Tue Feb 12 17:57:24 2019 +0000

    #30: Remove dependencies automatically pulled in by GTK2.

 BUILDING.md | 7 -------
 1 file changed, 7 deletions(-)
---
diff --git a/BUILDING.md b/BUILDING.md
index f6c2615a..4d1379d2 100644
--- a/BUILDING.md
+++ b/BUILDING.md
@@ -21,13 +21,6 @@ As can be seen from `meson.build`, the main requirements are **GTK2**, **libxml2
 
 For reference, a number of other libraries are recommended for extra features.  However, not all these have 
been moved to meson.  It is recommended you run `meson build` (to configure the build directory) and then 
check which optional dependencies are not found:
 
-- Cairo is used for anti-alised rendering to screen or PNG as well as PDF:
-  - http://cairographics.org
-  - Minimum version required (if at all) is 1.6
-- Libart allows anti-aliased rendering and anti-aliased export to PNG:
-  - http://www.artofcode.com/libart.html
-- Libpng is need for libart based anti-aliased PNG export:
-  http://download.sourceforge.net/libpng/
 - Libxslt allows export through XSLT translation schemas:
   - ftp://ftp.gnome.org/pub/GNOME/sources/libxslt/
 - **Python scripting is also possible** by installing Python 2.7 (note that meson requires python 3, 
therefore python2 needs to be explicitly installed) and pygtk.