Revert "Use temp file only when needed"

Things like https://github.com/MorrisJobke/github-issue-counter/blob/master/import_issues.py#L5
also depend on the current path, even though Python doesn't consider these to
be relative imports.

package.json

@@ -91,7 +91,7 @@
         "c9.ide.imgeditor": "#612e75ef4f",
         "c9.ide.immediate": "#a962119bec",
         "c9.ide.installer": "#0fde9f0067",
-        "c9.ide.language.python": "#55af15aeb9",
+        "c9.ide.language.python": "#2358e65f4f",
         "c9.ide.language.go": "#5952a39226",
         "c9.ide.mount": "#86c8985f34",
         "c9.ide.navigate": "#1fbb7cd53b",