Revert "Mark Exec/sandbox-path as expect broken on Windows"

This reverts commit a4f807d.

Author: ezyang

cabal-testsuite/PackageTests/Exec/sandbox-path.test.hs

@@ -1,10 +1,8 @@
 import Test.Cabal.Prelude
 main = cabalTest $ do
-    windows <- isWindows
-    expectBrokenIf windows 4133 $ do
-        withSandbox $ do
-            fails $ cabal "exec" ["my-executable"]
-            cabal "install" []
-            -- Execute indirectly via bash to ensure that we go through $PATH
-            cabal' "exec" ["sh", "--", "-c", "my-executable"]
-                >>= assertOutputContains "This is my-executable"
+    withSandbox $ do
+        fails $ cabal "exec" ["my-executable"]
+        cabal "install" []
+        -- Execute indirectly via bash to ensure that we go through $PATH
+        cabal' "exec" ["sh", "--", "-c", "my-executable"]
+            >>= assertOutputContains "This is my-executable"