HPCC-31213 Fix the regress test failure

The code in previous commit throws an exception if a file to be
deleted does not exist. That causes the regress test failure:
'File W20240208-191101-spray_input_CSV not found' when deleting
the file from the spray_queue_test.ecl. In this commit, the code
is changed to log the 'file not found'.

Signed-off-by: wangkx <[email protected]>

plugins/fileservices/fileservices.cpp

@@ -2837,22 +2837,24 @@ FILESERVICES_API void  FILESERVICES_CALL fsDeleteExternalFile(ICodeContext * ctx
     CDfsLogicalFileName lfn;
     lfn.setExternal(location,path);
 
+    StringBuffer s("DeleteExternalFile ('");
     RemoteFilename rfn;
     lfn.getExternalFilename(rfn);
-    Owned<IFile> f = createIFile(rfn);
-    if (!f->exists())
-        throw makeStringExceptionV(-1,"File %s not found",path);
-    if (f->isDirectory()==fileBool::foundYes)
-        checkExternalFileRights(ctx,lfn.get(),false,true);
+    Owned<IFile> file = createIFile(rfn);
+    if (!file->exists())
+        s.append(location).append(',').append(path).append("), file not found");
     else
     {
-        StringBuffer scopes;
-        checkExternalFileRights(ctx,lfn.getScopes(scopes),false,true);
+        if (file->isDirectory()==fileBool::foundYes)
+            checkExternalFileRights(ctx,lfn.get(),false,true);
+        else
+        {
+            StringBuffer scopes;
+            checkExternalFileRights(ctx,lfn.getScopes(scopes),false,true);
+        }
+        file->remove();
+        s.append(location).append(',').append(path).append(") done");
     }
-    Owned<IFile> file = createIFile(rfn);
-    file->remove();
-    StringBuffer s("DeleteExternalFile ('");
-    s.append(location).append(',').append(path).append(") done");
     WUmessage(ctx,SeverityInformation,NULL,s.str());
     AuditMessage(ctx,"DeleteExternalFile",path);
 }