Merge pull request #3280 from radarhere/installation

Removed old build flags from documentation

Author: hugovk

docs/installation.rst

@@ -215,17 +215,15 @@ Build Options
   parallel building.
 
 * Build flags: ``--disable-zlib``, ``--disable-jpeg``,
-  ``--disable-tiff``, ``--disable-freetype``, ``--disable-tcl``,
-  ``--disable-tk``, ``--disable-lcms``, ``--disable-webp``,
-  ``--disable-webpmux``, ``--disable-jpeg2000``,
+  ``--disable-tiff``, ``--disable-freetype``, ``--disable-lcms``,
+  ``--disable-webp``, ``--disable-webpmux``, ``--disable-jpeg2000``,
   ``--disable-imagequant``.
   Disable building the corresponding feature even if the development
   libraries are present on the building machine.
 
 * Build flags: ``--enable-zlib``, ``--enable-jpeg``,
-  ``--enable-tiff``, ``--enable-freetype``, ``--enable-tcl``,
-  ``--enable-tk``, ``--enable-lcms``, ``--enable-webp``,
-  ``--enable-webpmux``, ``--enable-jpeg2000``,
+  ``--enable-tiff``, ``--enable-freetype``, ``--enable-lcms``,
+  ``--enable-webp``, ``--enable-webpmux``, ``--enable-jpeg2000``,
   ``--enable-imagequant``.
   Require that the corresponding feature is built. The build will raise
   an exception if the libraries are not found. Webpmux (WebP metadata)