doxyfile: don't exclude Qt3 code

While doxygen appears to not recognize some of the commands in the code's
comments, I feel it is more useful to have the classes available in the
generated documentation even if it is not entirely formatted correctly.

Author: ulmus-scott

mythtv/docs/doxygen-create-developer-docs.cfg

@@ -902,14 +902,6 @@ EXCLUDE_PATTERNS       = */moc/* \
                          */test/* \
                          */.git
 
-# Skip files from the Qt3Support module.
-EXCLUDE_PATTERNS      += mmembuf.cpp \
-                         mmembuf.h \
-                         msocketdevice.cpp \
-                         msocketdevice.h \
-                         msocketdevice_unix.cpp \
-                         msocketdevice_win.cpp
-
 # Example code
 EXCLUDE_PATTERNS      += example.cpp