File gtkmm4-docs-without-timestamp.patch of Package gtkmm4

--- orig-gtkmm-4.4.0/docs/reference/Doxyfile.in	2021-09-09 15:14:37.662747900 +0200
+++ gtkmm-4.4.0/docs/reference/Doxyfile.in	2021-09-28 22:09:27.216408267 +0200
@@ -171,7 +171,7 @@
 HTML_COLORSTYLE_HUE    = 220
 HTML_COLORSTYLE_SAT    = 100
 HTML_COLORSTYLE_GAMMA  = 80
-HTML_TIMESTAMP         = YES
+HTML_TIMESTAMP         = NO
 HTML_DYNAMIC_SECTIONS  = NO
 HTML_INDEX_NUM_ENTRIES = 100
 GENERATE_DOCSET        = NO