8235996: Move obsolete flag G1RSetScanBlockSize in flags list

Reviewed-by: sjohanss, lkorinth

Author: Thomas Schatzl

src/hotspot/share/gc/g1/g1_globals.hpp

@@ -204,11 +204,6 @@
   develop(bool, G1VerifyCTCleanup, false,                                   \
           "Verify card table cleanup.")                                     \
                                                                             \
-  product(size_t, G1RSetScanBlockSize, 64,                                  \
-          "Size of a work unit of cards claimed by a worker thread"         \
-          "during RSet scanning.")                                          \
-          range(1, max_uintx)                                               \
-                                                                            \
   develop(uintx, G1DummyRegionsPerGC, 0,                                    \
           "The number of dummy regions G1 will allocate at the end of "     \
           "each evacuation pause in order to artificially fill up the "     \

src/hotspot/share/runtime/arguments.cpp

@@ -525,7 +525,6 @@ static SpecialFlag const special_jvm_flags[] = {
   { "FieldsAllocationStyle",        JDK_Version::jdk(14), JDK_Version::jdk(15), JDK_Version::jdk(16) },
   { "CompactFields",                JDK_Version::jdk(14), JDK_Version::jdk(15), JDK_Version::jdk(16) },
   { "MonitorBound",                 JDK_Version::jdk(14), JDK_Version::jdk(15), JDK_Version::jdk(16) },
-  { "G1RSetScanBlockSize",          JDK_Version::jdk(14), JDK_Version::jdk(15), JDK_Version::jdk(16) },
   { "UseParallelOldGC",             JDK_Version::jdk(14), JDK_Version::jdk(15), JDK_Version::jdk(16) },
 
   // --- Deprecated alias flags (see also aliased_jvm_flags) - sorted by obsolete_in then expired_in:
@@ -543,6 +542,7 @@ static SpecialFlag const special_jvm_flags[] = {
   { "BindGCTaskThreadsToCPUs",       JDK_Version::undefined(), JDK_Version::jdk(14), JDK_Version::jdk(16) },
   { "UseGCTaskAffinity",             JDK_Version::undefined(), JDK_Version::jdk(14), JDK_Version::jdk(16) },
   { "GCTaskTimeStampEntries",        JDK_Version::undefined(), JDK_Version::jdk(14), JDK_Version::jdk(16) },
+  { "G1RSetScanBlockSize",           JDK_Version::jdk(14),     JDK_Version::jdk(15), JDK_Version::jdk(16) },
 
 #ifdef TEST_VERIFY_SPECIAL_JVM_FLAGS
   // These entries will generate build errors.  Their purpose is to test the macros.