iOS, simplifyModule in cppuhelper is unused

function simplifyModule is reported unused == error on iOS,
therefore guarded with an #ifndef IOS

Change-Id: I751cf68bd46ed17032251fede030f9082ce4e4f5
diff --git a/cppuhelper/source/servicemanager.cxx b/cppuhelper/source/servicemanager.cxx
index 163e0e6..09e555a 100644
--- a/cppuhelper/source/servicemanager.cxx
+++ b/cppuhelper/source/servicemanager.cxx
@@ -1809,6 +1809,7 @@ cppuhelper::ServiceManager::findServiceImplementation(
}

/// Make a simpler unique name for preload / progress reporting.
#ifndef IOS
static rtl::OUString simplifyModule(const rtl::OUString &uri)
{
    sal_Int32 nIdx;
@@ -1833,6 +1834,7 @@ static rtl::OUString simplifyModule(const rtl::OUString &uri)
        edit.remove(0,3);
    return edit.makeStringAndClear();
}
#endif

/// Used only by LibreOfficeKit when used by Online to pre-initialize
void cppuhelper::ServiceManager::preloadImplementations() {