Fix: Fix redundant call to truncateDirtyTables (#20)

The truncation was done twice at test start : 1 when through sniffer 
start and 1 when test start.

src/Sniffer/BaseTriggerBasedTableSniffer.php

@@ -13,7 +13,6 @@
  */
 namespace CakephpTestSuiteLight\Sniffer;
 
-
 use Cake\Database\Exception;
 use Cake\Datasource\ConnectionInterface;
 
@@ -129,7 +128,6 @@ public function cleanAllTables()
         if ($this->isInTempMode()) {
             $this->markAllTablesAsDirty();
         }
-        $this->truncateDirtyTables();
     }
 
     /**
@@ -211,4 +209,4 @@ public function isInMainMode(): bool
     {
         return ($this->getMode() === self::PERM_MODE);
     }
-}
+}