Remove spurious dependency on java.desktop in module-info.java (#811)

Signed-off-by: Ashley <73482956+ascopes@users.noreply.github.com>

Author: ascopes

java-compiler-testing/src/main/java/module-info.java

@@ -132,7 +132,6 @@
   requires static org.junit.jupiter.api;
   requires static org.junit.jupiter.params;
   requires org.slf4j;
-  requires java.desktop;
 
   //////////////////
   /// PUBLIC API ///