delete old tracked ccan/opt/*.o files
diff --git a/ccan/opt/helpers.o b/ccan/opt/helpers.o
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diff --git a/ccan/opt/opt.o b/ccan/opt/opt.o
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diff --git a/ccan/opt/parse.o b/ccan/opt/parse.o
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diff --git a/ccan/opt/usage.o b/ccan/opt/usage.o
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