[Frontend] NFC: Remove KeyPathWithStaticMembers feature flag

This is a temporary way to land SE-0438 changes without disrupting
anything else.

Author: xedin

include/swift/Basic/Features.def

@@ -235,7 +235,6 @@ EXPERIMENTAL_FEATURE(MacrosOnImports, true)
 EXPERIMENTAL_FEATURE(TupleConformances, false)
 EXPERIMENTAL_FEATURE(FullTypedThrows, false)
 EXPERIMENTAL_FEATURE(SameElementRequirements, false)
-EXPERIMENTAL_FEATURE(KeyPathWithStaticMembers, false)
 
 // Whether to enable @_used and @_section attributes
 EXPERIMENTAL_FEATURE(SymbolLinkageMarkers, true)

lib/AST/FeatureSet.cpp

@@ -198,7 +198,6 @@ UNINTERESTING_FEATURE(GroupActorErrors)
 UNINTERESTING_FEATURE(SameElementRequirements)
 UNINTERESTING_FEATURE(UnspecifiedMeansMainActorIsolated)
 UNINTERESTING_FEATURE(GlobalActorInferenceCutoff)
-UNINTERESTING_FEATURE(KeyPathWithStaticMembers)
 UNINTERESTING_FEATURE(GenerateForceToMainActorThunks)
 
 static bool usesFeatureSendingArgsAndResults(Decl *decl) {

test/Interpreter/keypath.swift

@@ -1,4 +1,4 @@
-// RUN: %target-run-simple-swift(-Xfrontend -enable-experimental-feature -Xfrontend KeyPathWithStaticMembers) | %FileCheck %s
+// RUN: %target-run-simple-swift | %FileCheck %s
 
 // REQUIRES: asserts
 // REQUIRES: executable_test

test/Interpreter/static_keypaths.swift

@@ -2,13 +2,13 @@
 // RUN: split-file %s %t/src
 
 /// Build LibA
-// RUN: %host-build-swift %t/src/LibA.swift -swift-version 5 -enable-experimental-feature KeyPathWithStaticMembers -emit-module -emit-library -enable-library-evolution -module-name LibA -o %t/%target-library-name(LibA) -emit-module-interface-path %t/LibA.swiftinterface
+// RUN: %host-build-swift %t/src/LibA.swift -swift-version 5 -emit-module -emit-library -enable-library-evolution -module-name LibA -o %t/%target-library-name(LibA) -emit-module-interface-path %t/LibA.swiftinterface
 
 // Build LibB
-// RUN: %target-build-swift %t/src/LibB.swift -I %t -L %t -l LibA -swift-version 5 -enable-experimental-feature KeyPathWithStaticMembers -emit-module -emit-library -module-name LibB -o %t/%target-library-name(LibB)
+// RUN: %target-build-swift %t/src/LibB.swift -I %t -L %t -l LibA -swift-version 5 -emit-module -emit-library -module-name LibB -o %t/%target-library-name(LibB)
 
 // Build LibC
-// RUN: %target-build-swift %t/src/LibC.swift -I %t -L %t -l LibA -swift-version 5 -enable-experimental-feature KeyPathWithStaticMembers -emit-module -emit-library -module-name LibC -o %t/%target-library-name(LibC)
+// RUN: %target-build-swift %t/src/LibC.swift -I %t -L %t -l LibA -swift-version 5 -emit-module -emit-library -module-name LibC -o %t/%target-library-name(LibC)
 
 // Build & run main.swift
 // RUN: %target-build-swift -I %t -L %t -l LibA -l LibB -l LibC %t/src/main.swift -o %t/a.out

test/SILGen/keypaths.swift

@@ -1,4 +1,4 @@
-// RUN: %target-swift-emit-silgen -enable-experimental-feature KeyPathWithStaticMembers -target %target-swift-5.1-abi-triple -disable-experimental-parser-round-trip -parse-stdlib -module-name keypaths %s | %FileCheck %s
+// RUN: %target-swift-emit-silgen -target %target-swift-5.1-abi-triple -disable-experimental-parser-round-trip -parse-stdlib -module-name keypaths %s | %FileCheck %s
 // FIXME: Remove '-disable-experimental-parser-round-trip'.
 
 // REQUIRES: asserts

test/SILOptimizer/access_wmo_diagnose.swift

@@ -1,4 +1,4 @@
-// RUN: %target-swift-frontend -enable-experimental-feature KeyPathWithStaticMembers -parse-as-library -emit-sil -enforce-exclusivity=checked -primary-file %s -o /dev/null -verify
+// RUN: %target-swift-frontend -parse-as-library -emit-sil -enforce-exclusivity=checked -primary-file %s -o /dev/null -verify
 
 // REQUIRES: asserts
 

test/attr/attr_dynamic_member_lookup.swift

@@ -1,4 +1,4 @@
-// RUN: %target-typecheck-verify-swift -enable-experimental-feature KeyPathWithStaticMembers
+// RUN: %target-typecheck-verify-swift
 
 // REQUIRES: asserts
 

test/expr/unary/keypath/keypath.swift

@@ -1,4 +1,4 @@
-// RUN: %target-swift-frontend -typecheck -enable-experimental-feature KeyPathWithStaticMembers -parse-as-library %s -verify
+// RUN: %target-swift-frontend -typecheck -parse-as-library %s -verify
 
 // REQUIRES: asserts