Delete bench_results.txt

examples/bench_results.txt

-array_assignments.ion      0.000240539
-array_methods.ion          0.000281431
-arrays.ion                 0.000245731
-arrays_with_braces.ion     0.000476467
-basic_condition.ion        0.000266780
-braces.ion                 0.000241510
-break.ion                  0.000313642
-builtin_piping.ion         0.000256032
-color_test.ion             0.000253150
-command-substitutions.ion  0.000242006
-comments.ion               0.000261471
-conditionals.ion           0.000280284
-continue.ion               0.000278109
-else_if.ion                0.000267490
-exists.ion                 0.000275639
-fail.ion                   0.000269857
-fibonacci.ion              0.000239840
-fn.ion                     0.000239008
-for.ion                    0.000251706
-function_piping.ion        0.000248401
-glob.ion                   0.000254041
-herestring.ion             0.000280422
-inner_expansions.ion       0.000319765
-let.ion                    0.000259338
-match.ion                  0.000278759
-methods.ion                0.000256649
-multiline-arrays.ion       0.000239579
-multiple-lines.ion         0.000242128
-nested_conditions.ion      0.000237927
-nested_for.ion             0.000237165
-not.ion                    0.000236242
-pipelines.ion              0.000248289
-scopes.ion                 0.000255989
-script_exec.ion            0.000244493
-strings.ion                0.000245152
-while.ion                  0.000238573