8243991: Remove obsolete -XX:ThreadStackSize from java command line

Reviewed-by: erikj
diff --git a/make/RunTestsPrebuiltSpec.gmk b/make/RunTestsPrebuiltSpec.gmk
index 9412654..fab23fc 100644
--- a/make/RunTestsPrebuiltSpec.gmk
+++ b/make/RunTestsPrebuiltSpec.gmk
@@ -63,7 +63,7 @@
 
 # Use hard-coded values for java flags (one size, fits all!)
 JAVA_FLAGS := -Duser.language=en -Duser.country=US
-JAVA_FLAGS_BIG := -Xms64M -Xmx1600M -XX:ThreadStackSize=1536
+JAVA_FLAGS_BIG := -Xms64M -Xmx1600M
 JAVA_FLAGS_SMALL := -XX:+UseSerialGC -Xms32M -Xmx512M -XX:TieredStopAtLevel=1
 BUILDJDK_JAVA_FLAGS_SMALL := -Xms32M -Xmx512M -XX:TieredStopAtLevel=1
 BUILD_JAVA_FLAGS := $(JAVA_FLAGS_BIG)
diff --git a/make/autoconf/boot-jdk.m4 b/make/autoconf/boot-jdk.m4
index 3383097..0f40a77 100644
--- a/make/autoconf/boot-jdk.m4
+++ b/make/autoconf/boot-jdk.m4
@@ -433,12 +433,10 @@
   UTIL_ADD_JVM_ARG_IF_OK([-Xms64M],boot_jdk_jvmargs_big,[$JAVA])
   BOOTCYCLE_JVM_ARGS_BIG=-Xms64M
 
-  # Maximum amount of heap memory and stack size.
+  # Maximum amount of heap memory.
   JVM_HEAP_LIMIT_32="768"
   # Running a 64 bit JVM allows for and requires a bigger heap
   JVM_HEAP_LIMIT_64="1600"
-  STACK_SIZE_32=768
-  STACK_SIZE_64=1536
   JVM_HEAP_LIMIT_GLOBAL=`expr $MEMORY_SIZE / 2`
   if test "$JVM_HEAP_LIMIT_GLOBAL" -lt "$JVM_HEAP_LIMIT_32"; then
     JVM_HEAP_LIMIT_32=$JVM_HEAP_LIMIT_GLOBAL
@@ -452,14 +450,11 @@
   fi
 
   if test "x$BOOT_JDK_BITS" = "x32"; then
-    STACK_SIZE=$STACK_SIZE_32
     JVM_MAX_HEAP=$JVM_HEAP_LIMIT_32
   else
-    STACK_SIZE=$STACK_SIZE_64
     JVM_MAX_HEAP=$JVM_HEAP_LIMIT_64
   fi
   UTIL_ADD_JVM_ARG_IF_OK([-Xmx${JVM_MAX_HEAP}M],boot_jdk_jvmargs_big,[$JAVA])
-  UTIL_ADD_JVM_ARG_IF_OK([-XX:ThreadStackSize=$STACK_SIZE],boot_jdk_jvmargs_big,[$JAVA])
 
   AC_MSG_RESULT([$boot_jdk_jvmargs_big])
 
@@ -468,13 +463,10 @@
 
   if test "x$OPENJDK_TARGET_CPU_BITS" = "x32"; then
     BOOTCYCLE_MAX_HEAP=$JVM_HEAP_LIMIT_32
-    BOOTCYCLE_STACK_SIZE=$STACK_SIZE_32
   else
     BOOTCYCLE_MAX_HEAP=$JVM_HEAP_LIMIT_64
-    BOOTCYCLE_STACK_SIZE=$STACK_SIZE_64
   fi
   BOOTCYCLE_JVM_ARGS_BIG="$BOOTCYCLE_JVM_ARGS_BIG -Xmx${BOOTCYCLE_MAX_HEAP}M"
-  BOOTCYCLE_JVM_ARGS_BIG="$BOOTCYCLE_JVM_ARGS_BIG -XX:ThreadStackSize=$BOOTCYCLE_STACK_SIZE"
   AC_MSG_CHECKING([flags for bootcycle boot jdk java command for big workloads])
   AC_MSG_RESULT([$BOOTCYCLE_JVM_ARGS_BIG])
   AC_SUBST(BOOTCYCLE_JVM_ARGS_BIG)