break(url): remove toDecode parameter

[lukeed]

Turns out no one was using it except for polka@next, which stopped using it as of #172

Updated benchmarks while I was at it, using the latest Node 16 release. Here are the latest results 🎉

Benchmark: "/foo/bar?user=tj&pet=fluffy"
  url.parse        x   1,766,192 ops/sec ±0.59% (189 runs sampled)
  new URL()        x     254,742 ops/sec ±0.93% (188 runs sampled)
  parseurl         x   2,296,634 ops/sec ±0.43% (188 runs sampled)
  @polka/url       x   3,096,770 ops/sec ±0.56% (189 runs sampled)

Benchmark: (REPEAT) "/foo/bar?user=tj&pet=fluffy"
  url.parse        x   1,794,821 ops/sec ±1.01% (188 runs sampled)
  new URL()        x     258,587 ops/sec ±0.63% (189 runs sampled)
  parseurl         x  30,616,846 ops/sec ±0.47% (191 runs sampled)
  @polka/url       x 314,370,079 ops/sec ±0.36% (189 runs sampled)

Benchmark: "/foo/bar"
  url.parse        x   7,373,531 ops/sec ±0.63% (188 runs sampled)
  new URL()        x     291,642 ops/sec ±0.83% (189 runs sampled)
  parseurl         x  21,946,341 ops/sec ±0.93% (186 runs sampled)
  @polka/url       x  48,697,030 ops/sec ±0.49% (189 runs sampled)

Benchmark: "/"
  url.parse        x  10,744,706 ops/sec ±0.47% (188 runs sampled)
  new URL()        x     315,725 ops/sec ±0.86% (184 runs sampled)
  parseurl         x  46,863,886 ops/sec ±1.06% (189 runs sampled)
  @polka/url       x  72,862,914 ops/sec ±0.54% (190 runs sampled)

[codecov-commenter]

Codecov Report

Merging #175 (1ca3dd7) into next (6ac6498) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##              next      #175   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            4         4           
  Lines          108       104    -4     
=========================================
- Hits           108       104    -4     

Impacted Files	Coverage Δ
packages/url/index.js	100.00% <100.00%> (ø)

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