Revert "Merge pull request #60453 from etcwilde/ewilde/add-missing-bootstrap-compat-dependencies"

This reverts commit 2ea1c81, reversing
changes made to 329d584.

Author: etcwilde

SwiftCompilerSources/CMakeLists.txt

@@ -295,8 +295,6 @@ else()
       set(compatibility_libs
           "swiftCompatibility50-${platform}"
           "swiftCompatibility51-${platform}"
-          "swiftCompatibility56-${platform}"
-          "swiftCompatibilityConcurrency-${platform}"
           "swiftCompatibilityDynamicReplacements-${platform}")
 
       list(APPEND b0_deps ${compatibility_libs})