Revert "Taint cookies and headers (#3182)"

[CarlesDD]

This reverts commit cc51732.

What does this PR do?

Revert #3182

Motivation

#3182 seems to increment the cpu and memory consumption when IAST is enabled. Reverting until we figure out what's wrong with it.

[github-actions]

Overall package size

Self size: 4.18 MB
Deduped: 58.38 MB
No deduping: 58.43 MB

Dependency sizes

name	version	self size	total size
@datadog/pprof	2.2.1	14.24 MB	15.12 MB
@datadog/native-iast-taint-tracking	1.4.1	14.85 MB	14.86 MB
@datadog/native-appsec	3.2.0	13.38 MB	13.39 MB
protobufjs	7.1.2	2.76 MB	6.55 MB
@datadog/native-iast-rewriter	2.0.1	2.09 MB	2.1 MB
@datadog/native-metrics	2.0.0	898.77 kB	1.3 MB
opentracing	0.14.7	194.81 kB	194.81 kB
semver	7.3.8	88.2 kB	118.6 kB
@datadog/sketches-js	2.1.0	109.9 kB	109.9 kB
lodash.sortby	4.7.0	75.76 kB	75.76 kB
lru-cache	7.14.0	74.95 kB	74.95 kB
ipaddr.js	2.0.1	59.52 kB	59.52 kB
ignore	5.2.0	48.87 kB	48.87 kB
import-in-the-middle	1.3.5	34.34 kB	38.81 kB
istanbul-lib-coverage	3.2.0	29.34 kB	29.34 kB
retry	0.10.1	27.44 kB	27.44 kB
lodash.uniq	4.5.0	25.01 kB	25.01 kB
limiter	1.1.5	23.17 kB	23.17 kB
lodash.kebabcase	4.1.1	17.75 kB	17.75 kB
lodash.pick	4.4.0	16.33 kB	16.33 kB
node-abort-controller	3.0.1	14.33 kB	14.33 kB
crypto-randomuuid	1.0.0	11.18 kB	11.18 kB
diagnostics_channel	1.1.0	7.07 kB	7.07 kB
path-to-regexp	0.1.7	6.78 kB	6.78 kB
koalas	1.0.2	6.47 kB	6.47 kB
methods	1.1.2	5.29 kB	5.29 kB
module-details-from-path	1.0.3	4.47 kB	4.47 kB

_{🤖 This report was automatically generated by heaviest-objects-in-the-universe}

[codecov]

Codecov Report

Merging #3192 (727ad53) into master (e8ed531) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #3192      +/-   ##
==========================================
+ Coverage   86.55%   86.57%   +0.01%     
==========================================
  Files         333      333              
  Lines       11947    11934      -13     
  Branches       33       33              
==========================================
- Hits        10341    10332       -9     
+ Misses       1606     1602       -4     

Impacted Files	Coverage Δ
...s/dd-trace/src/appsec/iast/taint-tracking/index.js	100.00% <ø> (ø)
...ace/src/appsec/iast/taint-tracking/origin-types.js	100.00% <ø> (ø)
packages/dd-trace/src/appsec/iast/index.js	100.00% <100.00%> (ø)
...trace/src/appsec/iast/taint-tracking/operations.js	100.00% <100.00%> (+1.58%)	⬆️
.../dd-trace/src/appsec/iast/taint-tracking/plugin.js	100.00% <100.00%> (ø)

... and 2 files with indirect coverage changes

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