[gnome-bluetooth] build: Remove debug related variables

[Bastien Nocera <hadess src gnome org>]

commit 33d164596ebddaab77b1e20e659a68fa037c2462
Author: Iñigo Martínez <inigomartinez gmail com>
Date:   Tue Nov 14 11:35:46 2017 +0100

    build: Remove debug related variables
    
    meson was holding a variable for the build type, and another one
    for checking if the build is a debug build.
    
    This can be inspected directly, without storing it in any variable,
    because it's only used once.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=790332

 meson.build |    5 +----
 1 files changed, 1 insertions(+), 4 deletions(-)
---
diff --git a/meson.build b/meson.build
index bdc8eaf..4ca4acc 100644
--- a/meson.build
+++ b/meson.build
@@ -32,9 +32,6 @@ gnomebt_mandir = join_paths(gnomebt_prefix, get_option('mandir'))
 gnomebt_pkgdatadir = join_paths(gnomebt_datadir, meson.project_name())
 gnomebt_pkglibdir = join_paths(gnomebt_libdir, meson.project_name())
 
-gnomebt_buildtype = get_option('buildtype')
-gnomebt_debug = gnomebt_buildtype.contains('debug')
-
 # options
 enable_gtk_doc = get_option('gtk_doc')
 enable_gir = get_option('introspection')
@@ -82,7 +79,7 @@ common_flags = [
 ]
 
 compiler_flags = []
-if gnomebt_debug
+if get_option('buildtype').contains('debug')
   test_flags = [
     '-Werror=format=2',
     '-Werror=implicit-function-declaration',