fix exercism#1786 clean hint relative to a removed test (exercism#1804)

mirkoperillo · web-flow · commit 9dd0b83d16dc · 2020-04-15T22:23:57.000-07:00
diff --git a/exercises/isogram/.meta/hints.md b/exercises/isogram/.meta/hints.md
@@ -1,10 +0,0 @@
-If you find that `testWorksWithGermanLetters` fails even though you think you've implemented it correctly,
-this could be because of the [JVM encoding](https://www.ibm.com/support/knowledgecenter/en/ssw_ibm_i_61/rzaha/international.htm). 
-Try setting the `JAVA_TOOL_OPTIONS` environment variable to `-Dfile.encoding=UTF8` to fix this.
-- To set an environment variable on Windows:
-    1. Go to Computer -> Properties -> Advanced System Settings
-    2. Add a new environment variable
-
-- [To set an environment variable on a mac](http://blog.lidalia.org.uk/2011/04/setting-default-java-file-encoding-to.html)
-
-- [To set an environment variable on linux](https://unix.stackexchange.com/questions/151733/where-can-i-set-global-java-options)
