gdb: correctly enable python support for mingw

Change-Id: Ibc5cb6ecd1db4cbc0436606700dec1e56e44b71d
Reviewed-by: Teemu Holappa <teemu.holappa@qt.io>

recipes/gdb/gdb-cross-canadian_7.%.bbappend

@@ -29,7 +29,7 @@
 
 DEPENDS_${PN}_append_sdkmingw32 = " nativesdk-prebuild-python"
 RDEPENDS_${PN}_append_sdkmingw32 = " nativesdk-prebuild-python"
-EXTRA_OECONF_remove_sdkmingw32 = " --with-python=no"
+EXTRA_OECONF_remove_sdkmingw32 = " --without-python"
 EXTRA_OECONF_append_sdkmingw32 = " --with-python"
 
 do_install_append_sdkmingw32() {