eo: lets drop efl_interfaces

its not required anymore, our wonderfull new syntax solves the original
problem it was trying to solve.

fixes T7565

Reviewed-by: Cedric BAIL <cedric.bail@free.fr>
Differential Revision: https://phab.enlightenment.org/D7893

src/Makefile_Eo.am

@@ -4,8 +4,7 @@
 eo_eolian_files = \
 	lib/eo/efl_object.eo \
 	lib/eo/efl_class.eo \
-	lib/eo/efl_object_override.eo \
-	lib/eo/efl_interface.eo
+	lib/eo/efl_object_override.eo
 
 eo_eolian_c = $(eo_eolian_files:%.eo=%.eo.c)
 eo_eolian_h = $(eo_eolian_files:%.eo=%.eo.h)

src/lib/elementary/efl_ui_legacy.eo

@@ -1,4 +1,4 @@
-interface Efl.Ui.Legacy extends Efl.Interface
+interface Efl.Ui.Legacy
 {
    [[The bg (background) widget is used for setting (solid) background decorations
 

src/lib/elementary/efl_ui_list_view_model.eo

@@ -1,6 +1,6 @@
 import efl_ui_list_view_types;
 
-interface Efl.Ui.List_View_Model extends Efl.Interface
+interface Efl.Ui.List_View_Model
 {
    methods {
       @property load_range {

src/lib/elementary/efl_ui_list_view_relayout.eo

@@ -1,4 +1,4 @@
-interface Efl.Ui.List_View_Relayout extends Efl.Interface
+interface Efl.Ui.List_View_Relayout
 {
    methods {
       layout_do {

src/lib/eo/Eo.h

@@ -216,7 +216,6 @@ typedef void (*Efl_Del_Intercept) (Eo *obj_id);
 
 #include "efl_object_override.eo.h"
 #include "efl_object.eo.h"
-#include "efl_interface.eo.h"
 #define EO_CLASS EFL_OBJECT_CLASS
 
 /** An event callback prototype. */

src/lib/eo/efl_interface.eo

@@ -1,7 +0,0 @@
-interface Efl.Interface
-{
-   [[An interface for other interfaces to inherit from.
-    This is useful when you want to create interfaces and mixins that expose
-    functions from a normal class such as @Efl.Object.constructor.]]
-}
-

src/lib/eo/eo_class_class.c

@@ -5,4 +5,3 @@
 #include "Eo.h"
 
 #include "efl_class.eo.c"
-#include "efl_interface.eo.c"

src/lib/eo/meson.build

@@ -4,8 +4,7 @@ eo_pub_deps = [eina]
 pub_eo_files = [
   'efl_object.eo',
   'efl_class.eo',
-  'efl_object_override.eo',
-  'efl_interface.eo'
+  'efl_object_override.eo'
 ]
 
 eo_src = [