docs: Drop reference to refcounting.txt to fix make dist

In addition to 94d6971ca4e7e6acb066a042c7e0815b63d13b82

diff --git a/docs/Makefile.am b/docs/Makefile.am
index 5b698bef8a70f4835b2b3a4caeac1aa30031231d..be66356b237a751c8451c7fdcd7ed9b7b600a414 100644 (file)
--- a/docs/Makefile.am
+++ b/docs/Makefile.am
@@ -10,7 +10,6 @@ EXTRA_DIST += \
        focus_tracking.txt              \
        gtkdocs_fix                     \
        make-todo                       \
-       refcounting.txt                 \
        RELEASE-HOWTO                   \
        sizing-test.txt                 \
        styles.txt                      \