[OCaml] Remove the last remnants of libswigocaml

Parts of it were removed in 79785d403c

Remove the oc_bool type.

Lib/ocaml/extra-install.list

@@ -1,5 +1,4 @@
 # see top-level Makefile.in
-# libswigocaml is not needed anymore.
 swigp4.ml
 swig.mli
 swig.ml

Lib/ocaml/libswigocaml.h

@@ -1,20 +0,0 @@
-/* Ocaml runtime support */
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-    typedef int oc_bool;
-    extern void *nullptr;
-    
-    extern oc_bool isnull( void *v );
-    
-    extern void *get_char_ptr( char *str );
-    extern void *make_ptr_array( int size );
-    extern void *get_ptr( void *arrayptr, int elt );
-    extern void set_ptr( void *arrayptr, int elt, void *elt_v );
-    extern void *offset_ptr( void *ptr, int n );
-
-#ifdef __cplusplus
-};
-#endif

Lib/ocaml/typecheck.i

@@ -78,7 +78,7 @@
   }
 }
 
-%typecheck(SWIG_TYPECHECK_BOOL) bool, oc_bool, const bool &, const oc_bool & {
+%typecheck(SWIG_TYPECHECK_BOOL) bool, const bool & {
   if( !Is_block($input) ) $1 = 0;
   else {
       switch( SWIG_Tag_val($input) ) {

Lib/ocaml/typemaps.i

@@ -198,7 +198,6 @@
 %enddef
 
 SIMPLE_MAP(bool, caml_val_bool, caml_long_val);
-SIMPLE_MAP(oc_bool, caml_val_bool, caml_long_val);
 SIMPLE_MAP(char, caml_val_char, caml_long_val);
 SIMPLE_MAP(signed char, caml_val_char, caml_long_val);
 SIMPLE_MAP(unsigned char, caml_val_uchar, caml_long_val);