Rename rebench conf file + remove native executor

Closes #88

Author: tolauwae

benchmarks/warduino.conf renamed to benchmarks/rebench.conf

@@ -25,14 +25,6 @@ benchmark_suites:
 
 # a set of executables for the benchmark execution
 executors:
-    native:
-        path: .
-        executable: native_bench.sh
-        env:
-            PATH: /snap/bin/:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
-        args: " %(benchmark)s"
-        build:
-            - cd tasks; make
     warduino:
         path: .
         executable: warduino_bench.sh
@@ -49,6 +41,5 @@ experiments:
         suites:
           - Microbenchmarks
         executions:
-            - native
             - warduino