build: remove reference to openpower-dbus-interfaces

org.open_power dbus interfaces are now covered by
phosphor-dbus-interfaces, so remove dependency on repository
which is no longer needed.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I45bc0d719b3945d265618424f165a97d138af4bc
diff --git a/meson.build b/meson.build
index 7134a35..dd7433b 100644
--- a/meson.build
+++ b/meson.build
@@ -15,7 +15,6 @@
 cppfs = meson.get_compiler('cpp').find_library('stdc++fs')
 gmock = dependency('gmock', disabler: true, required: build_tests)
 gtest = dependency('gtest', main: true, disabler: true, required: build_tests)
-openpower_dbus_interfaces = dependency('openpower-dbus-interfaces')
 phosphor_dbus_interfaces = dependency('phosphor-dbus-interfaces')
 phosphor_logging = dependency('phosphor-logging')
 prog_python = import('python').find_installation('python3')
@@ -50,7 +49,6 @@
     'utility.cpp',
     dependencies: [
         cppfs,
-        openpower_dbus_interfaces,
         phosphor_dbus_interfaces,
         phosphor_logging,
         sdbusplus,