remove blank lines

IPython/core/magic_arguments.py

@@ -37,7 +37,6 b' arguments::'
           -o OPTION, --option OPTION
                                 An optional argument.
 
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 Here is an elaborated example that uses default parameters in `argument` and calls the `args` in the cell magic::
 
     from IPython.core.magic import register_cell_magic
@@ -70,7 +69,6 b' In a jupyter notebook, this cell magic can be executed like this::'
     print("bar")
     i = 42
 
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 Inheritance diagram:
 
 .. inheritance-diagram:: IPython.core.magic_arguments