Fix meson

This CL removes the unnecessary options that could break the gbmcweb
build when plugin is enabled.
Specifically, include_type:system would incorrectly change the system
include path when built with bmcweb.

Change-Id: I49d1ac0009af01cfd3fc235602072067f10246a1
Signed-off-by: Tao Ke <taok@google.com>
diff --git a/meson.build b/meson.build
index 778d31d..5482aa0 100644
--- a/meson.build
+++ b/meson.build
@@ -20,9 +20,8 @@
 gbmcweb_platform_plugin = static_library(
   'gbmcweb_platform_plugin',
   'example_platform_plugin.cpp',
-  implicit_include_directories: false,
   dependencies: [
-    dependency('boost',version : '>=1.81.0', required : true, include_type: 'system'),
+    dependency('boost',version : '>=1.81.0', required : true),
     nlohmann_json,
     dependency('openssl', required : true),
     dependency('sdbusplus', required : true),