[babl] build: remove unecessary _la_SOURCE entry from extension makefile

[Øyvind "pippin" Kolås <ok src gnome org>]

commit d01464ef49d89212795d4e338c4773b3e48119c0
Author: John Marshall <jtm home gmail com>
Date:   Mon Apr 1 11:52:09 2019 +0100

    build: remove unecessary _la_SOURCE entry from extension makefile

 extensions/Makefile.am | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/extensions/Makefile.am b/extensions/Makefile.am
index 9a1f66e..027ecba 100644
--- a/extensions/Makefile.am
+++ b/extensions/Makefile.am
@@ -47,7 +47,6 @@ ext_LTLIBRARIES = \
 cairo_la_SOURCES = cairo.c
 CIE_la_SOURCES = CIE.c
 simple_la_SOURCES = simple.c
-float_half_la_SOURCES = float-half.c
 gegl_fixups_la_SOURCES = gegl-fixups.c
 gggl_lies_la_SOURCES = gggl-lies.c
 gggl_table_lies_la_SOURCES = gggl-table-lies.c