Remove GCJ support

GCC7 dropped GCJ.

Closes https://sourceforge.net/p/swig/bugs/823/

Examples/ruby/check.list

@@ -9,7 +9,6 @@ functor
 hashargs
 import
 import_template
-java
 mark_function
 multimap
 operator

Examples/ruby/java/Example.java

@@ -1,29 +0,0 @@
-public class Example {
-    public   int      mPublicInt;
-    
-    public Example() {
-	mPublicInt = 0;
-    }
-    
-    public Example(int IntVal) {
-	mPublicInt = IntVal;
-    }
-    
-    
-    public int Add(int a, int b) {
-	return (a+b);
-    }
-    
-    public float Add(float a, float b) {
-	return (a+b);
-    }
-    
-    public String Add(String a, String b) {
-	return (a+b);
-    }
-    
-    public Example Add(Example a, Example b) {
-	return new Example(a.mPublicInt + b.mPublicInt);
-    }
-}
-

Examples/ruby/java/Makefile

@@ -1,24 +0,0 @@
-TOP        = ../..
-SWIGEXE    = $(TOP)/../swig
-SWIG_LIB_DIR = $(TOP)/../$(TOP_BUILDDIR_TO_TOP_SRCDIR)Lib
-CXXSRCS    =
-TARGET     = example
-INTERFACE  = example.i
-LIBS       = -lm
-
-check: build
-	$(MAKE) -f $(TOP)/Makefile SRCDIR='$(SRCDIR)' ruby_run
-
-build: Example.class Example.h
-	$(MAKE) -f $(TOP)/Makefile SRCDIR='$(SRCDIR)' CXXSRCS='$(CXXSRCS)' \
-	SWIG_LIB_DIR='$(SWIG_LIB_DIR)' SWIGEXE='$(SWIGEXE)' \
-	TARGET='$(TARGET)' INTERFACE='$(INTERFACE)' \
-	CXXSHARED="gcj -fpic -shared Example.class" LIBS="-lstdc++" DEFS='' ruby_cpp
-
-clean:
-	$(MAKE) -f $(TOP)/Makefile SRCDIR='$(SRCDIR)' ruby_clean
-	rm -f *.class Example.h
-
-Example.class Example.h: $(SRCDIR)Example.java
-	gcj -d . -fPIC -C -c -g $(SRCDIR)Example.java
-	gcjh Example.class

Examples/ruby/java/example.i

@@ -1,9 +0,0 @@
-%module example
-%include <cni.i>
-
-%{
-#include "Example.h"
-%}
-
-
-%include Example.h

Examples/ruby/java/runme.rb

@@ -1,18 +0,0 @@
-require 'example'
-
-Example.JvCreateJavaVM(nil)
-Example.JvAttachCurrentThread(nil, nil)
-
-e1 = Example::Example.new(1)
-e2 = Example::Example.new(2)
-
-print e1.Add(1,2),"\n"
-print e1.Add(1.0,2.0),"\n"
-e3 = e1.Add(e1,e2)
-print e3.mPublicInt,"\n"
-
-
-print e1.Add("1","2"),"\n"
-
-Example.JvDetachCurrentThread()
-