db: remove obsolete support for renamed libtool

libtool is now longer renamed to ${host}-libtool, so remove the changes
to support this.

(From OE-Core rev: 291654cb31ff3568f278d143510f1e9fac573966)

Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-support/db/db_5.3.28.bb

@@ -66,8 +66,6 @@ PACKAGECONFIG ??= ""
 PACKAGECONFIG[verify] = "--enable-verify, --disable-verify"
 PACKAGECONFIG[dbm] = "--enable-dbm,--disable-dbm,"
 
-EXTRA_OEMAKE += "LIBTOOL='./${HOST_SYS}-libtool'"
-
 EXTRA_AUTORECONF += "--exclude=autoheader  -I ${S}/dist/aclocal -I${S}/dist/aclocal_java"
 AUTOTOOLS_SCRIPT_PATH = "${S}/dist"
 
@@ -91,7 +89,7 @@ oe_runconf:prepend() {
 
 do_compile:prepend() {
     # Stop libtool adding RPATHs
-    sed -i -e 's|hardcode_into_libs=yes|hardcode_into_libs=no|' ${B}/${HOST_SYS}-libtool
+    sed -i -e 's|hardcode_into_libs=yes|hardcode_into_libs=no|' ${B}/libtool
 }
 
 do_install:append() {