Revert "allow enabling Prism via flag or env var"

This reverts commit 9b76c7fc89460ed8e9be40e4037c1d68395c0f6d.

1 files changed, 0 insertions, 17 deletions

diff --git a/iseq.c b/iseq.c
index 5dc600e3b5..47d19a98f3 100644
--- a/iseq.c
+++ b/iseq.c
@@ -1487,23 +1487,6 @@ iseqw_s_compile_file_prism(int argc, VALUE *argv, VALUE self)
     return iseqw_new(iseq);
 }
 
-rb_iseq_t *
-rb_iseq_new_main_prism(pm_string_t *input, pm_options_t *options, VALUE path)
-{
-    pm_parser_t parser;
-    pm_parser_init(&parser, pm_string_source(input), pm_string_length(input), options);
-
-    if (NIL_P(path)) path = rb_fstring_lit("<compiled>");
-    int start_line = 0;
-    pm_options_line_set(options, start_line);
-
-    rb_iseq_t *iseq = iseq_alloc();
-    iseqw_s_compile_prism_compile(&parser, Qnil, iseq, path, path, start_line);
-
-    pm_parser_free(&parser);
-    return iseq;
-}
-
 /*
  *  call-seq:
  *      InstructionSequence.compile_file(file[, options]) -> iseq