Auto merge of #23499 - est31:unused_code_removal_3, r=jdm

Remove unused code (3/N)

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Third PR in a series of PRs to remove unused/dead code from servo, powered by an (upcoming) tool of mine. Please take a look and tell me if you want to keep something.

* First PR: #23477
* Second PR: #23498

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- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [ ] These changes fix #___ (GitHub issue number if applicable)

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- [ ] There are tests for these changes OR
- [x] These changes do not require tests because they only remove dead code

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components/selectors/bloom.rs

@@ -18,11 +18,6 @@ const KEY_MASK: u32 = (1 << KEY_SIZE) - 1;
 /// A counting Bloom filter with 8-bit counters.
 pub type BloomFilter = CountingBloomFilter<BloomStorageU8>;
 
-/// A non-counting Bloom filter.
-///
-/// Effectively a counting Bloom filter with 1-bit counters.
-pub type NonCountingBloomFilter = CountingBloomFilter<BloomStorageBool>;
-
 /// A counting Bloom filter with parameterized storage to handle
 /// counters of different sizes.  For now we assume that having two hash
 /// functions is enough, but we may revisit that decision later.