8130092: Backout Update jprt.properties with property listing tests subtrees

Reviewed-by: dholmes

make/jprt.properties

@@ -45,9 +45,6 @@ jprt.sync.push=${my.is.hotspot.job ? false : true}
 # Directories to be excluded from the source bundles
 jprt.bundle.exclude.src.dirs=build dist webrev
 
-# Regression tests subtrees to use
-jprt.test.src.directories=./test,./hotspot/test,./jdk/test,./langtools/test
-
 # Use configure when building
 jprt.build.use.configure=true