build: Drop gtk3-install.[vsprops|props]

They are not used anymore, and are removed at this point.

gdk/Makefile.am

@@ -459,13 +459,6 @@ MSVCPROJS = gdk-3
 
 gdk_3_FILES = $(gdk_c_sources)
 gdk_3_EXCLUDES = dummy
-gdk_3_HEADERS_DIR = $(gdkincludedir)
-
-gdk_3_HEADERS_INST = \
-	$(gdkinclude_HEADERS)		\
-	$(deprecatedinclude_HEADERS)
-
-gdk_3_HEADERS_EXCLUDES = dummy
 
 include $(top_srcdir)/win32/Makefile.msvcproj
 
@@ -510,7 +503,6 @@ endif
 
 dist-hook: \
 	$(top_builddir)/win32/vs9/gdk-3.vcproj	\
-	$(top_builddir)/win32/vs9/gdk-3.headers	\
 	$(INTROSPECTION_INTERMEDIATE_ITEMS)
 
 DISTCLEANFILES = gdkconfig.h stamp-gc-h

gdk/broadway/Makefile.am

@@ -72,11 +72,6 @@ MSVCPROJS = gdk3-broadway broadwayd
 
 gdk3_broadway_FILES = $(libgdk_broadway_la_SOURCES)
 gdk3_broadway_EXCLUDES = dummy
-gdk3_broadway_HEADERS_DIR = $(libgdkbroadwayincludedir)
-
-gdk3_broadway_HEADERS_INST = $(libgdkbroadwayinclude_HEADERS)
-
-gdk3_broadway_HEADERS_EXCLUDES = dummy
 
 broadwayd_FILES = $(broadwayd_SOURCES)
 broadwayd_EXCLUDES = dummy
@@ -85,7 +80,6 @@ include $(top_srcdir)/win32/Makefile.msvcproj
 
 dist-hook: \
 	$(top_builddir)/win32/vs9/gdk3-broadway.vcproj		\
-	$(top_builddir)/win32/vs9/broadwayd.vcproj		\
-	$(top_builddir)/win32/vs9/gdk3-broadway.headers
+	$(top_builddir)/win32/vs9/broadwayd.vcproj
 
 -include $(top_srcdir)/git.mk

gdk/win32/Makefile.am

@@ -47,16 +47,10 @@ MSVCPROJS = gdk3-win32
 
 gdk3_win32_FILES = $(libgdk_win32_la_SOURCES)
 gdk3_win32_EXCLUDES = dummy
-gdk3_win32_HEADERS_DIR = $(libgdkwin32includedir)
-
-gdk3_win32_HEADERS_INST = $(libgdkwin32include_HEADERS)
-
-gdk3_win32_HEADERS_EXCLUDES = dummy
 
 include $(top_srcdir)/win32/Makefile.msvcproj
 
 dist-hook: \
-	$(top_builddir)/win32/vs9/gdk3-win32.vcproj	\
-	$(top_builddir)/win32/vs9/gdk3-win32.headers
+	$(top_builddir)/win32/vs9/gdk3-win32.vcproj
 
 -include $(top_srcdir)/git.mk