qt: fix build some more when QPA is not available

Compiler would complain about include directory that didn't
exist because QPA_INCLUDE_PATH gets subst-ed regardless
(and if it didn't we'd have just an empty -I argument).

https://bugzilla.gnome.org/show_bug.cgi?id=767553

diff --git a/ext/qt/Makefile.am b/ext/qt/Makefile.am
index eab3e97..5fdd90a 100644 (file)
--- a/ext/qt/Makefile.am
+++ b/ext/qt/Makefile.am
@@ -26,7 +26,6 @@ libgstqtsink_la_SOURCES = \
 libgstqtsink_la_CXXFLAGS = \
        -I$(top_srcdir)/gst-libs \
        -I$(top_builddir)/gst-libs \
-       -I$(QPA_INCLUDE_PATH) \
        $(GST_CXXFLAGS) \
        $(GST_BASE_CFLAGS) \
        $(GST_PLUGINS_BASE_CFLAGS) \