std/fs/test.zig: Remove work-around for stat() failures on glibc

glibc variants now support the stat-family of calls correctly, so
this test is safe to include.

lib/std/fs/test.zig

@@ -660,9 +660,6 @@ test "readAllAlloc" {
 }
 
 test "Dir.statFile" {
-    // TODO: Re-enable once https://github.com/ziglang/zig/issues/17034 is solved
-    if (builtin.os.tag == .linux and builtin.link_libc and builtin.abi == .gnu) return error.SkipZigTest;
-
     try testWithAllSupportedPathTypes(struct {
         fn impl(ctx: *TestContext) !void {
             const test_file_name = try ctx.transformPath("test_file");