removed unnecessary variable

Author: pusukuri

Sources/Build/BuildDescription/SwiftTargetBuildDescription.swift

@@ -647,7 +647,7 @@ public final class SwiftTargetBuildDescription {
 
         // rdar://115777026
         // Compiler commands need to track SDK dependencies to trigger rebuilds when the SDK changes
-        if let sdkPath = self.buildParameters.sdkPath, self.buildParameters.targetTriple.isDarwin() {
+        if let sdkPath = self.buildParameters.toolchain.sdkRootPath, self.buildParameters.triple.isDarwin() {
             args += ["-sdk", sdkPath.pathString]
         }
 

Sources/CoreCommands/SwiftTool.swift

@@ -695,7 +695,6 @@ public final class SwiftTool {
 
         return try BuildParameters(
             dataPath: dataPath,
-            sdkPath: toolchain.sdkRootPath,
             configuration: options.build.configuration,
             toolchain: toolchain,
             triple: triple,

Sources/SPMBuildCore/BuildParameters/BuildParameters.swift

@@ -29,9 +29,6 @@ public struct BuildParameters: Encodable {
     /// The path to the data directory.
     public var dataPath: AbsolutePath
 
-    /// The path to the SDKROOT directory.
-    public var sdkPath: AbsolutePath?
-
     /// The build configuration.
     public var configuration: BuildConfiguration
 
@@ -122,7 +119,6 @@ public struct BuildParameters: Encodable {
 
     public init(
         dataPath: AbsolutePath,
-        sdkPath: AbsolutePath?,
         configuration: BuildConfiguration,
         toolchain: Toolchain,
         triple: Triple? = nil,
@@ -149,7 +145,6 @@ public struct BuildParameters: Encodable {
         )
 
         self.dataPath = dataPath
-        self.sdkPath = toolchain.sdkRootPath
         self.configuration = configuration
         self._toolchain = _Toolchain(toolchain: toolchain)
         self.triple = triple

Sources/SPMTestSupport/MockBuildTestHelper.swift

@@ -85,7 +85,6 @@ public func mockBuildParameters(
 ) -> BuildParameters {
     try! BuildParameters(
         dataPath: buildPath,
-        sdkPath: toolchain.sdkRootPath,
         configuration: config,
         toolchain: toolchain,
         triple: targetTriple,

Sources/swift-bootstrap/main.swift

@@ -279,7 +279,6 @@ struct SwiftBootstrapBuildTool: ParsableCommand {
 
             let buildParameters = try BuildParameters(
                 dataPath: dataPath,
-                sdkPath: self.targetToolchain.sdkRootPath,
                 configuration: configuration,
                 toolchain: self.targetToolchain,
                 triple: self.hostToolchain.targetTriple,