[gnome-shell] build: Exclude private headers from GIR

[Florian Müllner <fmuellner src gnome org>]

commit 32d57440140b70ab4019f17ae6e8f63420a40cfd
Author: Florian Müllner <fmuellner gnome org>
Date:   Tue Sep 10 15:51:38 2019 +0200

    build: Exclude private headers from GIR
    
    They contain API that is explicitly not meant to be used externally
    and - as it uses the "wrong" namespace due to the _ prefix - doesn't
    end up in the introspection data anyway.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/709

 src/st/meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/st/meson.build b/src/st/meson.build
index 4cbebace77..45cc5c3c09 100644
--- a/src/st/meson.build
+++ b/src/st/meson.build
@@ -93,7 +93,7 @@ st_enums = gnome.mkenums_simple('st-enum-types',
 #endif'''
 )
 
-st_gir_sources = st_sources + st_private_headers + st_headers + st_enums
+st_gir_sources = st_sources + st_headers + st_enums
 
 data_to_c = find_program(meson.source_root() + '/src/data-to-c.pl')