[test] Fix validation tests

Author: Max Moiseev

validation-test/stdlib/FixedPoint.swift.gyb

@@ -327,11 +327,11 @@ FixedPoint.test("BitwiseOperations/UInt64") {
 }
 
 FixedPoint.test("OverflowCheck") {
-  expectEqual((partialValue: 9, overflow: .none),
+  expectEqual((partialValue: 9, overflow: false),
     (4 as Int8).addingReportingOverflow(5))
-  expectEqual((partialValue: -128, overflow: .overflow),
+  expectEqual((partialValue: -128, overflow: true),
     (1 as Int8).addingReportingOverflow(127))
-  expectEqual((partialValue: 0, overflow: .overflow),
+  expectEqual((partialValue: 0, overflow: true),
     (2 as UInt8).multipliedReportingOverflow(by: 128))
 }
 

validation-test/stdlib/FixedPointArithmeticTraps.swift.gyb

@@ -14,32 +14,6 @@ import StdlibUnittest
 // constants.  This is to check runtime behavior and ensure the constant is
 // not folded.
 
-func expectOverflow<T>(
-  _ res: (T, overflow: Bool),
-  //===--- TRACE boilerplate ----------------------------------------------===//
-  _ message: @autoclosure () -> String = "",
-    showFrame: Bool = true,
-    stackTrace: SourceLocStack = SourceLocStack(),
-    file: String = #file, line: UInt = #line
-) {
-  expectTrue(
-    res.overflow, "expected overflow",
-    stackTrace: stackTrace.pushIf(showFrame, file: file, line: line))
-}
-
-func expectNoOverflow<T>(
-  _ res: (T, overflow: Bool),
-  //===--- TRACE boilerplate ----------------------------------------------===//
-  _ message: @autoclosure () -> String = "",
-    showFrame: Bool = true,
-    stackTrace: SourceLocStack = SourceLocStack(),
-    file: String = #file, line: UInt = #line
-) {
-  expectFalse(
-    res.overflow, "expected no overflow",
-    stackTrace: stackTrace.pushIf(showFrame, file: file, line: line))
-}
-
 func expectOverflow<T>(
   _ res: (partialValue: T, overflow: Bool),
   //===--- TRACE boilerplate ----------------------------------------------===//