These tests are quite time consuming. Removing them will speed up the CDS tests cycle.

[1] The LockSharedStrings.java test is obsolete. The archived strings used to be in its own "special" G1 region and we needed a test to check if locking objects in this region is working properly. Today all archived heap objects are stored in regular G1 regions. This test is no longer needed.

[2] This part of SharedStringsStress.java is no longer relevant and can be deleted.

https://github.com/openjdk/jdk/blob/d3fc8df8af11d7cc1cc341bc75e46b7e93d6db31/test/hotspot/jtreg/runtime/cds/appcds/sharedStrings/SharedStringsStress.java#L76-L85

// Test for handling of heap fragmentation. With sharedArchiveConfigFile, we will dump about
// 18MB of shared objects on 64 bit VM (smaller on 32-bit).
//
// During dump time, an extra copy of these objects are allocated,
// so we need about 36MB, plus a few MB for other system data. So 64MB total heap
// should be enough.
//
// The VM should executed a full GC to maximize contiguous free space and
// avoid fragmentation.
{"-Xmx64m"},

During CDS dump time, we no longer allocate extra copies of the archived heap objects in the actual Java heap.