[partition] Remove artificial delay

- The sleep(3) was meant as a debugging aid for the multi-threaded
   part of requirements checking.

src/modules/partition/gui/PartitionViewStep.cpp

@@ -668,13 +668,12 @@ PartitionViewStep::jobs() const
     return m_core->jobs();
 }
 
-Calamares::RequirementsList PartitionViewStep::checkRequirements()
+Calamares::RequirementsList
+PartitionViewStep::checkRequirements()
 {
-    if (m_future)
+    if ( m_future )
         m_future->waitForFinished();
 
-    sleep(3);
-
     Calamares::RequirementsList l;
     l.append(
     {
@@ -686,7 +685,6 @@ Calamares::RequirementsList PartitionViewStep::checkRequirements()
     } );
 
     return l;
-
 }