egl: drop unused _EGL_BUILT_IN_DRIVER_DRI2

Unused since b174a1ae72 "egl: Simplify the "driver" interface".

Signed-off-by: Eric Engestrom <eric@engestrom.ch>
Reviewed-by: Eric Anholt <eric@anholt.net>

src/egl/Android.mk

@@ -40,7 +40,6 @@ LOCAL_SRC_FILES := \
 
 LOCAL_CFLAGS := \
 	-D_EGL_NATIVE_PLATFORM=_EGL_PLATFORM_ANDROID \
-	-D_EGL_BUILT_IN_DRIVER_DRI2 \
 	-DHAVE_ANDROID_PLATFORM
 
 LOCAL_C_INCLUDES := \

src/egl/Makefile.am

@@ -120,8 +120,7 @@ AM_CFLAGS += \
 	-I$(top_srcdir)/src/gbm/backends/dri \
 	-I$(top_builddir)/src/egl/wayland/wayland-drm \
 	-I$(top_srcdir)/src/egl/wayland/wayland-drm \
-	-DDEFAULT_DRIVER_DIR=\"$(DRI_DRIVER_SEARCH_DIR)\" \
-	-D_EGL_BUILT_IN_DRIVER_DRI2
+	-DDEFAULT_DRIVER_DIR=\"$(DRI_DRIVER_SEARCH_DIR)\"
 
 nodist_libEGL_common_la_SOURCES = \
 	$(dri2_backend_GENERATED_FILES)

src/egl/meson.build

@@ -93,7 +93,6 @@ if with_dri2
   )
   c_args_for_egl += [
     '-DDEFAULT_DRIVER_DIR="@0@"'.format(dri_search_path),
-    '-D_EGL_BUILT_IN_DRIVER_DRI2',
   ]
 endif