Remove stale code for hybrid heap and incremental GC

The hybrid heap emulator was last working in the non-SMP R11B
run-time system. When the constant pools were introduced in R12B,
the hybrid heap emulator was not updated to handle them.

At this point, the harm from reduced readability of the code is
greater than any potential usefulness of keeping the code.

1 files changed, 3 insertions, 4 deletions

diff --git a/otp_build b/otp_build
index c6c73fedfa..1fee139666 100755
--- a/otp_build
+++ b/otp_build
@@ -51,7 +51,6 @@ usage ()
     echo "    release <target_dir> - creates a small release to <target_dir>"
     echo "    release [-a] <target_dir> - creates full release to <target_dir>"
     echo "    smp [-a] - build an Erlang system, smp flavor only"
-    echo "    hybrid [-a] - build an Erlang system, hybrid flavor only"
     echo "    tests <dir> - Build testsuites to <dir>"
     echo ""
     echo "These are for cleaning up an open source distribution"
@@ -1309,8 +1308,8 @@ cd $ERL_TOP
 
 determine_version_controller
 
-# Unset ERL_FLAGS and ERL_<Release>_FLAGS to prevent, for instance,
-# a value of "-hybrid" to run the hybrid emulator during bootstrap.
+# Unset ERL_FLAGS and ERL_<Release>_FLAGS during bootstrap to
+# prevent potential problems
 sys_vsn=`awk '/SYSTEM_VSN = / {print $3}' < erts/vsn.mk`
 sys_erl_flags="ERL_${sys_vsn}_FLAGS"
 unset ERL_FLAGS
@@ -1420,7 +1419,7 @@ case "$1" in
 		do_lazy_configure_target_clean;;
 	opt)
 		do_boot;;
-	plain|smp|hybrid)
+	plain|smp)
 		if [ $minus_a_flag = false ]; then 
 		    TYPE=opt
 		fi;