STYLE: remove unnecessary stdout, stderr /dev/null redirects

- no stderr redirect needed:
    * 'command -v'

- no stdout/stderr redirect needed:
    * 'rm -f'

STYLE: consistent spacing after redirects

tutorials/verificationAndValidation/turbulentInflow/Allrun-parallel

@@ -29,7 +29,7 @@ do
     mv -f log.* *.png postProcessing "$results" 2>/dev/null
 
     cleanTimeDirectories
-    \rm -rf processor* >/dev/null 2>&1
+    rm -rf processor*
 done
 
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