Drop broken logic the top-level page doesn't need.

Due to a key not being found in the dictionary, this logic redirects to:

    https://docs.swift.org/swift-book/documentation/the-swift-programming-language/undefined

It isn't needed here anyhow, because there aren't any headings on the
top-level page to map from the legacy system to the DocC version.

Author: amartini51

bin/redirects/index.html

@@ -17,79 +17,7 @@
 <script>
 const baseURL = "https://docs.swift.org/swift-book/documentation/the-swift-programming-language/";
 
-const headingRedirects = {
-    "#ID461": "guidedtour#Simple-Values",
-    "#ID462": "guidedtour#Control-Flow",
-    "#ID463": "guidedtour#Functions-and-Closures",
-}
-
-const chapterRedirects = {
-    "GuidedTour/GuidedTour.html": "guidedtour",
-    "GuidedTour/AboutSwift.html": "aboutswift",
-    "GuidedTour/Compatibility.html": "compatibility",
-    "GuidedTour/GuidedTour.html": "guidedtour",
-    "GuidedTour/GuidedTourPart.html": "guidedtour",
-
-    "LanguageGuide/AccessControl.html": "accesscontrol",
-    "LanguageGuide/AdvancedOperators.html": "advancedoperators",
-    "LanguageGuide/AutomaticReferenceCounting.html": "automaticreferencecounting",
-    "LanguageGuide/BasicOperators.html": "basicoperators",
-    "LanguageGuide/ClassesAndStructures.html": "classesandstructures",
-    "LanguageGuide/Closures.html": "closures",
-    "LanguageGuide/CollectionTypes.html": "collectiontypes",
-    "LanguageGuide/Concurrency.html": "concurrency",
-    "LanguageGuide/ControlFlow.html": "controlflow",
-    "LanguageGuide/Deinitialization.html": "deinitialization",
-    "LanguageGuide/Enumerations.html": "enumerations",
-    "LanguageGuide/ErrorHandling.html": "errorhandling",
-    "LanguageGuide/Extensions.html": "extensions",
-    "LanguageGuide/Functions.html": "functions",
-    "LanguageGuide/Generics.html": "generics",
-    "LanguageGuide/Inheritance.html": "inheritance",
-    "LanguageGuide/Initialization.html": "initialization",
-    "LanguageGuide/LanguageGuidePart.html": "languageguide",
-    "LanguageGuide/MemorySafety.html": "memorysafety",
-    "LanguageGuide/Methods.html": "methods",
-    "LanguageGuide/NestedTypes.html": "nestedtypes",
-    "LanguageGuide/OpaqueTypes.html": "opaquetypes",
-    "LanguageGuide/OptionalChaining.html": "optionalchaining",
-    "LanguageGuide/Properties.html": "properties",
-    "LanguageGuide/Protocols.html": "protocols",
-    "LanguageGuide/StringsAndCharacters.html": "stringsandcharacters",
-    "LanguageGuide/Subscripts.html": "subscripts",
-    "LanguageGuide/TheBasics.html": "thebasics",
-    "LanguageGuide/TypeCasting.html": "typecasting",
-
-    "ReferenceManual/AboutTheLanguageReference.html": "aboutthelanguagereference",
-    "ReferenceManual/Attributes.html": "attributes",
-    "ReferenceManual/Declarations.html": "declarations",
-    "ReferenceManual/Expressions.html": "expressions",
-    "ReferenceManual/GenericParametersAndArguments.html": "genericparametersandarguments",
-    "ReferenceManual/LexicalStructure.html": "lexicalstructure",
-    "ReferenceManual/Patterns.html": "patterns",
-    "ReferenceManual/ReferenceManualPart.html": "referencemanual",
-    "ReferenceManual/Statements.html": "statements",
-    "ReferenceManual/Types.html": "types",
-    "ReferenceManual/zzSummaryOfTheGrammar.html": "summaryofthegrammar",
-
-    "RevisionHistory/RevisionHistory.html": "revisionhistory",
-    "RevisionHistory/RevisionHistoryPart.html": "revisionhistory",
-}
-
-const path = window.location.pathname;
-const hash = window.location.hash;
-
 var newURL = baseURL;
-if (hash == "") {
-    const components = path.split("/");
-    const part = components[components.length - 2];
-    const chapter = components[components.length - 1];
-    const redirectPath = chapterRedirects[part + "/" + chapter];
-    newURL += redirectPath;
-} else {
-    const redirectPath = headingRedirects[hash];
-    newURL += redirectPath;
-}
 
 document.getElementById("redirect").setAttribute("href", newURL);
 window.location = newURL;