[retro-gtk/c-port: 38/42] Drop unused API_VERSION and ENV_PLUGIN_PATH

[Adrien Plazas <aplazas src gnome org>]

commit 76b84c3fefc8b428f3f3f5166a0aacf938fac67b
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Mon Sep 25 13:36:37 2017 +0200

    Drop unused API_VERSION and ENV_PLUGIN_PATH

 retro-gtk/Makefile.am |    1 -
 retro-gtk/retro.vala  |   14 --------------
 2 files changed, 0 insertions(+), 15 deletions(-)
---
diff --git a/retro-gtk/Makefile.am b/retro-gtk/Makefile.am
index ddc3e1f..035776a 100644
--- a/retro-gtk/Makefile.am
+++ b/retro-gtk/Makefile.am
@@ -72,7 +72,6 @@ retro_gtk_private_h_sources = \
        $(NULL)
 
 libretro_gtk_la_SOURCES = \
-       retro.vala \
        retro-cairo-display.c \
        retro-controller-iterator.c \
        retro-core-descriptor.c \