nls: delete twenty seven untypable Greek compose sequences

Benno Schulenberg requested to merge benno/libx11:lessgreek into master

Only a few keyboard layouts contain the dead_iota keysym, and none of those layouts contains the acute keysym, so compose sequences that combine the two symbols cannot be typed and are thus useless.

Signed-off-by: Benno Schulenberg bensberg@telfort.nl

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