[jsscripting] Remove Thread.sleep workaround for multi-threading issu…

…es with UI-based scripts

Follow-up for openhab#1710.
Depends on openhab/openhab-core#4426.

Signed-off-by: Florian Hotze <dev@florianhotze.com>

bundles/org.openhab.automation.jsscripting/src/main/java/org/openhab/automation/jsscripting/internal/OpenhabGraalJSScriptEngine.java

@@ -304,13 +304,6 @@ protected void beforeInvocation() {
     protected Object afterInvocation(Object obj) {
         lock.unlock();
         logger.debug("Lock released after invocation.");
-        // Fixes illegal multi-thread access requested in UI-based scripts, where the script is running and a timer is
-        // waiting to acquire the lock.
-        try {
-            Thread.sleep(10);
-        } catch (InterruptedException e) {
-            throw new RuntimeException("Thread interrupted while sleeping", e);
-        }
         return super.afterInvocation(obj);
     }
 
@@ -385,13 +378,6 @@ public boolean tryLock(long l, TimeUnit timeUnit) throws InterruptedException {
     public void unlock() {
         lock.unlock();
         logger.debug("Lock released.");
-        // Fixes illegal multi-thread access requested in UI-based scripts, where the script is running and a timer is
-        // waiting to acquire the lock.
-        try {
-            Thread.sleep(10);
-        } catch (InterruptedException e) {
-            throw new RuntimeException("Thread interrupted while sleeping", e);
-        }
     }
 
     @Override