Something that is not needed can be expressed with ‘need not’. For example:
But while we are determined by history,
it is my personal belief that we need not be trapped by history,
and we need not be the victims of history.
In the English Grammar Profile, B2 point 126 in the category of MODALITY is:
need NEGATIVE
However, in the English Vocabulary Profile, this is listed at A2 with the following example:
iWeb search for need _x _vvi*
1 NEED NOT WORRY 3770
2 NEED NOT APPLY 2083
3 NEED N’T WORRY 1580
4 NEED NOT FEAR 1445
Let him know he need not fear anything, Lord.
5 LOOK 923 | 6 GO 839 | 7 TAKE 638 | 8 MAKE 491 | 9 WAIT 469 | 10 CONCERN 418 | 11 SAY 412 | 12 GIVE 335 | 13 USE 330 | 14 INCLUDE 328 | 15 FEEL 320
16 PROVIDE 315
17 KNOW 314 | 18 PAY 314 | 19 MEAN 292 | 20 TELL 285 | 21 NEED N’T LOOK 274 | 22 COME 258
23 CONSIDER 246
24 SPEND 218 | 25 BOTHER 216 | 26 FOLLOW 213 | 27 NEED N’T BOTHER 206
28 INVOLVE 199
29 ADDRESS 198 | 30 GET 195