Remove the root Jenkinsfile used by CI v1

Author: LaurentPetard

Jenkinsfile

@@ -15,12 +15,12 @@
         <directory suffix="Integration.php">tests/</directory>
     </testsuite>
 
-    <testsuite name="PHP_Client_Unit_Test_1_7">
+    <testsuite name="PHP_Client_Test_1_7">
         <directory suffix="Integration.php">tests/Common/Api/*</directory>
         <directory suffix="Integration.php">tests/v1_7/Api/*</directory>
     </testsuite>
 
-    <testsuite name="PHP_Client_Unit_Test_2_0">
+    <testsuite name="PHP_Client_Test_2_0">
         <directory suffix="Integration.php">tests/Common/Api/*</directory>
         <directory suffix="Integration.php">tests/v2_0/Api/*</directory>
     </testsuite>