Use Java StringTokenizer instead of ICU in ICUResourceBundle and VTimeZone

Deleted Component: misc

com.ibm.icu.util.StringTokenizer is used by com.ibm.icu.impl.ICUResourceBundle and com.ibm.icu.util.VTimeZone. They do not depend on ICU specific enhancement of StringTokenizer. Therefore, they can be replaced with JDK StringTokenizer. We should use JDK StringTokenizer because -

• JDK version is lighter

• Can avoid dragging unnecessary inter-component dependencies