Regenerate syntax nodes now that typed throws is not experimental

Author: DougGregor

Sources/SwiftParser/generated/ExperimentalFeatures.swift

@@ -30,15 +30,12 @@ extension Parser.ExperimentalFeatures {
   /// Whether to enable the parsing of 'then' statements.
   public static let thenStatements = Self (rawValue: 1 << 1)
 
-  /// Whether to enable the parsing of typed throws.
-  public static let typedThrows = Self (rawValue: 1 << 2)
-  
   /// Whether to enable the parsing of 'do' expressions.
-  public static let doExpressions = Self (rawValue: 1 << 3)
+  public static let doExpressions = Self (rawValue: 1 << 2)
 
   /// Whether to enable the parsing of NonEscableTypes.
-  public static let nonescapableTypes = Self (rawValue: 1 << 4)
+  public static let nonescapableTypes = Self (rawValue: 1 << 3)
 
   /// Whether to enable the parsing of TransferringArgsAndResults.
-  public static let transferringArgsAndResults = Self (rawValue: 1 << 5)
+  public static let transferringArgsAndResults = Self (rawValue: 1 << 4)
 }

Sources/SwiftSyntax/generated/syntaxNodes/SyntaxNodesD.swift

@@ -3513,7 +3513,6 @@ public struct DoStmtSyntax: StmtSyntaxProtocol, SyntaxHashable, _LeafStmtSyntaxN
   }
 
   /// The clause specifying the type of errors thrown from the 'do' block.
-  @_spi(ExperimentalLanguageFeatures)
   public var throwsClause: ThrowsClauseSyntax? {
     get {
       return Syntax(self).child(at: 3)?.cast(ThrowsClauseSyntax.self)

Sources/SwiftSyntax/generated/syntaxNodes/SyntaxNodesTUVWXYZ.swift

@@ -589,7 +589,6 @@ public struct ThrowsClauseSyntax: SyntaxProtocol, SyntaxHashable, _LeafSyntaxNod
   /// ### Tokens
   /// 
   /// For syntax trees generated by the parser, this is guaranteed to be `(`.
-  @_spi(ExperimentalLanguageFeatures)
   public var leftParen: TokenSyntax? {
     get {
       return Syntax(self).child(at: 3)?.cast(TokenSyntax.self)
@@ -609,7 +608,6 @@ public struct ThrowsClauseSyntax: SyntaxProtocol, SyntaxHashable, _LeafSyntaxNod
   }
 
   /// The thrown error type.
-  @_spi(ExperimentalLanguageFeatures)
   public var type: TypeSyntax? {
     get {
       return Syntax(self).child(at: 5)?.cast(TypeSyntax.self)
@@ -633,7 +631,6 @@ public struct ThrowsClauseSyntax: SyntaxProtocol, SyntaxHashable, _LeafSyntaxNod
   /// ### Tokens
   /// 
   /// For syntax trees generated by the parser, this is guaranteed to be `)`.
-  @_spi(ExperimentalLanguageFeatures)
   public var rightParen: TokenSyntax? {
     get {
       return Syntax(self).child(at: 7)?.cast(TokenSyntax.self)