ExtraSharedClassListFile contains extra white space at end of line

Somewhere in test framework for CDS the line in ExtraSharedClassList file is added '\f' at end of a line. This is found when working on jdk-8247536 for test case DumpClassListWithLF.java, it led to the method type verification failed since the second part of method type length is 2 not 1.

With this fixed, the code in src/java.base/share/classes/jdk/internal/misc/CDS.java:
Verification first does not need to trim the string first.