Remove unnecessary `#include` in generated files

lib/mruby/gem.rb

@@ -248,6 +248,10 @@ module MRuby
           f.puts %Q[#include <mruby.h>]
         else
           f.puts %Q[#include <stdlib.h>]
+          unless build.presym_enabled?
+            f.puts %Q[#include <mruby.h>]
+            f.puts %Q[#include <mruby/proc.h>]
+          end
         end
       end
 

src/dump.c

@@ -926,8 +926,6 @@ mrb_dump_irep_cfunc(mrb_state *mrb, const mrb_irep *irep, uint8_t flags, FILE *f
       return MRB_DUMP_WRITE_FAULT;
     }
     if (fprintf(fp,
-          "#include <mruby.h>\n"
-          "#include <mruby/proc.h>\n"
           "#ifdef __cplusplus\n"
           "extern const uint8_t %s[];\n"
           "#endif\n"