sweep: #6989 fix AREXCE: executables definition not removed correctly within the code

Author: aldbr

src/DIRAC/Resources/Computing/AREXComputingElement.py

@@ -391,9 +391,8 @@ def submitJob(self, executableFile, proxy, numberOfJobs=1, inputs=None, outputs=
             outputs = []
 
         # If there is a preamble, then we bundle it in an executable file
-        executables = []
         if self.preamble:
-            executables = [executableFile]
+            inputs.append(executableFile)
             executableFile = self._bundlePreamble(executableFile)
 
         # Submit multiple jobs sequentially.