Remove unused xpp3 & xstream from IntellijCoreDependencies

They are 'fatjared' into kotlin-compiler but proguard removes them from resulting jar afterwards

build.gradle.kts

@@ -158,9 +158,7 @@ extra["IntellijCoreDependencies"] =
                "picocontainer",
                "snappy-in-java-0.5.1",
                "streamex",
-               "trove4j",
-               "xpp3-1.1.4-min",
-               "xstream-1.4.8")
+               "trove4j")
 
 extra["nativePlatformVariants"] =
         listOf("windows-amd64",

compiler/compiler.pro

@@ -1,15 +1,4 @@
 -injars '<kotlin-compiler-jar-before-shrink>'(
-!com/thoughtworks/xstream/converters/extended/ISO8601**,
-!com/thoughtworks/xstream/converters/reflection/CGLIBEnhancedConverter**,
-!com/thoughtworks/xstream/io/xml/JDom**,
-!com/thoughtworks/xstream/io/xml/Dom4J**,
-!com/thoughtworks/xstream/io/xml/Xom**,
-!com/thoughtworks/xstream/io/xml/Wstx**,
-!com/thoughtworks/xstream/io/xml/KXml2**,
-!com/thoughtworks/xstream/io/xml/BEAStax**,
-!com/thoughtworks/xstream/io/json/Jettison**,
-!com/thoughtworks/xstream/mapper/CGLIBMapper**,
-!com/thoughtworks/xstream/mapper/LambdaMapper**,
 !org/apache/log4j/jmx/Agent*,
 !org/apache/log4j/net/JMS*,
 !org/apache/log4j/net/SMTP*,