[gnome-builder] build: Fix meson warning

[Patrick Griffis <pgriffis src gnome org>]

commit 75782193464667f99c8c2ce11598ed0e67d46829
Author: Patrick Griffis <tingping tingping se>
Date:   Thu Sep 28 06:30:52 2017 -0400

    build: Fix meson warning
    
    vcs_tag() doesn't support installing which is fine since this
    header is a private one.

 src/libide/meson.build |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)
---
diff --git a/src/libide/meson.build b/src/libide/meson.build
index cc93b06..5e1473f 100644
--- a/src/libide/meson.build
+++ b/src/libide/meson.build
@@ -29,8 +29,6 @@ libide_build_ident_h = vcs_tag(
      fallback: meson.project_version(),
         input: 'ide-build-ident.h.in',
        output: 'ide-build-ident.h',
-      install: true,
-  install_dir: libide_header_subdir,
 )
 libide_generated_headers += [libide_build_ident_h]