Remove new string interpolation benchmarks

They will return, probably in a separate pull request; I just want to see how much they're inflating StringInterpolation.o's code size.

Author: beccadax

benchmark/single-source/StringInterpolation.swift

@@ -24,14 +24,6 @@ public let StringInterpolationManySmallSegments = BenchmarkInfo(
   name: "StringInterpolationManySmallSegments",
   runFunction: run_StringInterpolationManySmallSegments,
   tags: [.validation, .api, .String])
-public let CustomStringInterpolation = BenchmarkInfo(
-  name: "CustomStringInterpolation",
-  runFunction: run_CustomStringInterpolation,
-  tags: [.validation, .api, .String])
-public let CustomStringNoInterpolation = BenchmarkInfo(
-  name: "CustomStringNoInterpolation",
-  runFunction: run_CustomStringNoInterpolation,
-  tags: [.validation, .api, .String])
 
 class RefTypePrintable : CustomStringConvertible {
   var description: String {
@@ -120,49 +112,3 @@ public func run_StringInterpolationManySmallSegments(_ N: Int) {
     }
   }
 }
-
-@inline(never)
-public func run_CustomStringInterpolation(_ N: Int) {
-  let reps = 100
-  let refResult = reps
-  let anInt: Int64 = 0x1234567812345678
-  let aRefCountedObject = RefTypePrintable()
-
-  for _ in 1...100*N {
-    var result = 0
-    for _ in 1...reps {
-      let s: String = identity(CustomString(
-        "\(anInt) abcdefdhijklmn \(aRefCountedObject) abcdefdhijklmn \u{01}")).value
-      let utf16 = s.utf16
-
-      // FIXME: if String is not stored as UTF-16 on this platform, then the
-      // following operation has a non-trivial cost and needs to be replaced
-      // with an operation on the native storage type.
-      result = result &+ Int(utf16.last!)
-      blackHole(s)
-    }
-    CheckResults(result == refResult)
-  }
-}
-
-@inline(never)
-public func run_CustomStringNoInterpolation(_ N: Int) {
-  let reps = 100
-  let refResult = reps
-
-  for _ in 1...100*N {
-    var result = 0
-    for _ in 1...reps {
-      let s: String = identity(CustomString(
-        "abcdefdhijklmn abcdefdhijklmn \u{01}")).value
-      let utf16 = s.utf16
-
-      // FIXME: if String is not stored as UTF-16 on this platform, then the
-      // following operation has a non-trivial cost and needs to be replaced
-      // with an operation on the native storage type.
-      result = result &+ Int(utf16.last!)
-      blackHole(s)
-    }
-    CheckResults(result == refResult)
-  }
-}

benchmark/utils/main.swift

@@ -315,8 +315,6 @@ registerBenchmark(StringHashing)
 registerBenchmark(StringInterpolation)
 registerBenchmark(StringInterpolationSmall)
 registerBenchmark(StringInterpolationManySmallSegments)
-registerBenchmark(CustomStringInterpolation)
-registerBenchmark(CustomStringNoInterpolation)
 registerBenchmark(StringMatch)
 registerBenchmark(StringRemoveDupes)
 registerBenchmark(StringTests)