revert box_big/tarantool.cfg after space array test consolidation

test/box_big/tarantool.cfg

@@ -65,10 +65,3 @@ space[5].index[1].key_field[0].fieldno = 1
 space[5].index[1].key_field[0].type = "STR"
 space[5].index[1].key_field[1].fieldno = 2
 space[5].index[1].key_field[1].type = "STR"
-
-# Make a gap in the space array -- space 6 is missing while space 7 is defined
-space[7].enabled = false
-space[7].index[0].type = "TREE"
-space[7].index[0].unique = 1
-space[7].index[0].key_field[0].fieldno = 1
-space[7].index[0].key_field[0].type = "NUM"