Revert "Add Codable conformance to common Foundation types"

[milseman]

This reverts commit dee889f.

[milseman]

@itaiferber this is reverting your commit from yesterday, which broke 32bit iPhone simulator tests. Could you re-open that PR (#9632) and do full OS X testing rather than just smoke?

[milseman]

@swift-ci please test

[milseman]

Specifically:

10:48:37 dyld: Library not loaded: libFoundationTestsShared.dylib
10:48:37   Referenced from: /Users/buildnode/jenkins/workspace/swift-PR-osx/branch-master/buildbot_incremental/swift-macosx-x86_64/test-iphonesimulator-i386/stdlib/Output/TestCalendar.swift.tmp/TestCalendar
10:48:37   Reason: image not found
10:48:37 Child process terminated with signal 6: Abort trap
10:48:37 

[milseman]

Merged as all (non-smoke) PR testing and package builders are blocked on this. Will continue to monitor the results as well.

[swift-ci]

Build failed
Jenkins build - Swift Test Linux Platform
Git Commit - 75c476b
Test requested by - @milseman

[milseman]

I'm not sure why the builder is taking so long, but the good news is that it seems to be passing.

[swift-ci]

Build failed
Jenkins build - Swift Test OS X Platform
Git Commit - 75c476b
Test requested by - @milseman