Address Python linting failures

Author: DougGregor

utils/swift_build_support/swift_build_support/products/__init__.py

@@ -14,8 +14,8 @@
 from .benchmarks import Benchmarks
 from .cmark import CMark
 from .curl import LibCurl
-from .earlyswiftsyntax import EarlySwiftSyntax
 from .earlyswiftdriver import EarlySwiftDriver
+from .earlyswiftsyntax import EarlySwiftSyntax
 from .foundation import Foundation
 from .indexstoredb import IndexStoreDB
 from .libcxx import LibCXX
@@ -64,6 +64,7 @@
     'SwiftPM',
     'SwiftDriver',
     'EarlySwiftDriver',
+    'EarlySwiftSyntax',
     'XCTest',
     'SwiftSyntax',
     'SKStressTester',

utils/swift_build_support/swift_build_support/products/earlyswiftsyntax.py

@@ -10,11 +10,7 @@
 #
 # ----------------------------------------------------------------------------
 
-import os
-
 from . import cmake_product
-from . import product
-from .. import shell
 from .. import toolchain