fix bats

Author: TApplencourt

integration_tests/backend_mpi.bats

@@ -1,5 +1,3 @@
-#!/usr/bin/env bats
-
 @test "backend_mpi_sanity_check" {
    mpicc ./integration_tests/mpi_helloworld.c -o mpi_helloworld
    $IPROF --backends mpi --analysis-output out.txt -- ./mpi_helloworld

integration_tests/general.bats

@@ -1,4 +1,4 @@
-#!/usr/bin/env bats
+bats_require_minimum_version 1.5.0
 
 teardown_file() {
    rm -rf $THAPI_HOME/thapi-traces

integration_tests/parallel_execution.bats

@@ -1,5 +1,3 @@
-#!/usr/bin/env bats
-
 teardown_file() {
    rm -rf $THAPI_HOME/thapi-traces
 }

integration_tests/sampling.bats

@@ -1,5 +1,3 @@
-#!/usr/bin/env bats
-
 teardown_file() {
    rm -rf $THAPI_HOME/thapi-traces
 }