get rid of the big lock -> nothing uses it and it's just asking for a crash-due-to-deletion

abstractrunner.cpp

@@ -43,8 +43,6 @@
 namespace Plasma
 {
 
-K_GLOBAL_STATIC(QMutex, s_bigLock)
-
 AbstractRunner::AbstractRunner(QObject *parent, const QString &path)
     : QObject(parent),
       d(new AbstractRunnerPrivate(this))
@@ -271,11 +269,6 @@ void AbstractRunner::setIgnoredTypes(RunnerContext::Types types)
     d->blackListed = types;
 }
 
-QMutex* AbstractRunner::bigLock()
-{
-    return s_bigLock;
-}
-
 void AbstractRunner::run(const Plasma::RunnerContext &search, const Plasma::QueryMatch &action)
 {
     if (d->script) {

abstractrunner.h

@@ -237,20 +237,6 @@ class PLASMA_EXPORT AbstractRunner : public QObject
          */
         QList<RunnerSyntax> syntaxes() const;
 
-        /**
-         * Access to a shared lock that all runners (and code that manages/interacts with them)
-         * can share to protect access to non-thread-safe shared code or data.
-         * Access of KSycoca records, for instance, is one place this lock should be used.
-         *
-         * Common usage:
-         *
-         * {
-         *     QMutexLocker lock(bigLock());
-         *     .. do something that isn't thread safe ..
-         * }
-         */
-        static QMutex *bigLock();
-
         /**
          * @return the default syntax for the runner or 0 if no default syntax has been defined
          *