[js] Clean up obsolete V8_VERSION machinery

This is no longer needed since we dropped support for the ancient
V8 versions which didn't provide version macros, but I missed
removing it in my previous cleanup in
48eba82ac8.

Doc/Manual/Javascript.html

@@ -147,11 +147,7 @@ $ make check-javascript-examples ENGINE=jsc</pre>
 <pre>
 $ make check-javascript-test-suite ENGINE=jsc</pre>
 </div>
-<p>You can specify a specific <code>V8</code> version for running the examples and tests</p>
-<div class="shell">
-<pre>
-$ make check-javascript-examples V8_VERSION=0x032530 ENGINE=v8</pre>
-</div>
+</p>
 
 <H3><a name="Javascript_known_issues">28.2.3 Known Issues</a></H3>
 

Examples/javascript/example.mk

@@ -1,12 +1,6 @@
 # Note: as a convention an example must be in a child directory of this.
 # These paths are relative to such an example directory
 
-ifneq (, $(V8_VERSION))
-	JSV8_VERSION=$(V8_VERSION)
-else
-	JSV8_VERSION=0x031110
-endif
-
 EXAMPLES_TOP   = ../..
 SWIG_TOP       = ../../..
 SWIGEXE        = $(SWIG_TOP)/swig
@@ -15,10 +9,6 @@ TARGET         = example
 INTERFACE      = example.i
 SWIGOPT        =
 
-ifneq (jsc, $(ENGINE))
-SWIGOPT += -DV8_VERSION=$(JSV8_VERSION)
-endif
-
 check: build
 	$(MAKE) -f $(EXAMPLES_TOP)/Makefile SRCDIR='$(SRCDIR)' TARGET='$(TARGET)' javascript_run
 

Examples/test-suite/javascript/Makefile.in

@@ -53,16 +53,8 @@ endif
 endif
 endif
 
-ifneq (, $(V8_VERSION))
-    JSV8_VERSION=$(V8_VERSION)
-else
-    JSV8_VERSION=0x031110
-endif
-
 include $(srcdir)/../common.mk
 
-SWIGOPT += -DV8_VERSION=$(JSV8_VERSION)
-
 _setup = \
 	if [ -f $(SCRIPTDIR)/$(SCRIPTPREFIX)$*$(SCRIPTSUFFIX) ]; then	  \
 	  $(ECHO_PROGRESS) "$(ACTION)ing $(LANGUAGE) ($(JSENGINE)) testcase $* (with run test)" ; \