Remove semi-colon at end of line in project file

Having a semi-colon at the end of line results in a parse error when
processed with qmake.

Change-Id: I9acfe5a7fc5a5db1c802cb70653789cc7edca5e3
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>

src/plugins/plugins.pro

@@ -81,7 +81,7 @@ contains(QT_CONFIG, declarative)|!isEmpty(QT.declarative.name) {
         }
     }
 } else {
-    warning("QmlProjectManager, QmlProfiler and QmlDesigner plugins have been disabled: The plugins require QtDeclarative");
+    warning("QmlProjectManager, QmlProfiler and QmlDesigner plugins have been disabled: The plugins require QtDeclarative")
 }
 
 include (debugger/lldb/guest/qtcreator-lldb.pri)