Fix kotlinc on Cygwin

Do not convert KOTLIN_HOME back to unix format, since it's passed to Win
version of Java, which doesn't understand /cygdrive/.. paths

 #KT-3049 Fixed

compiler/cli/bin/kotlinc-js

@@ -36,7 +36,6 @@ KOTLIN_HOME=`cd "$KOTLIN_HOME"/..; pwd`
 # Remove spaces from KOTLIN_HOME on windows
 if $cygwin; then
     KOTLIN_HOME=`cygpath --windows --short-name "$KOTLIN_HOME"`
-    KOTLIN_HOME=`cygpath --unix "$KOTLIN_HOME"`
 fi
 
 [ -n "$JAVA_OPTS" ] || JAVA_OPTS="-Xmx256M -Xms32M"

compiler/cli/bin/kotlinc-jvm

@@ -36,7 +36,6 @@ KOTLIN_HOME=`cd "$KOTLIN_HOME"/..; pwd`
 # Remove spaces from KOTLIN_HOME on windows
 if $cygwin; then
     KOTLIN_HOME=`cygpath --windows --short-name "$KOTLIN_HOME"`
-    KOTLIN_HOME=`cygpath --unix "$KOTLIN_HOME"`
 fi
 
 [ -n "$JAVA_OPTS" ] || JAVA_OPTS="-Xmx256M -Xms32M"