Oilpan: Remove GC_INFO_{DEFINE,DECLARE} macros

Source/build/scripts/templates/InternalSettingsGenerated.cpp.tmpl

 {% from "macros.tmpl" import license -%}
 {{ license() }}
 
 #include "config.h"
 #include "InternalSettingsGenerated.h"
 
 #include "core/page/Page.h"
 #include "core/frame/Settings.h"
 
 namespace WebCore {
 
-DEFINE_GC_INFO(InternalSettingsGenerated);
-
 InternalSettingsGenerated::InternalSettingsGenerated(Page* page)
     : m_page(page)
 {%- for setting in settings if setting.type|to_idl_type %}
     , m_{{setting.name}}(page->settings().{{setting.name}}())
 {%- endfor %}
 {
 }
 
 InternalSettingsGenerated::~InternalSettingsGenerated()
 {
 }
 
 void InternalSettingsGenerated::resetToConsistentState()
 {
 {%- for setting in settings if setting.type|to_idl_type %}
     m_page->settings().set{{setting.name|upper_first}}(m_{{setting.name}});
 {%- endfor %}
 }
 
 {%- for setting in settings if setting.type|to_idl_type %}
 
 void InternalSettingsGenerated::set{{setting.name|upper_first}}({{setting.type|to_passing_type}} {{setting.name}})
 {
     m_page->settings().set{{setting.name|upper_first}}({{setting.name}});
 }
 
 {%- endfor %}
 
 } // namespace WebCore