tf-a: style: remove block chomping indicator

Keep consistency. The block chomping indicator isn't necessary.

Signed-off-by: Fathi Boudra <fathi.boudra@linaro.org>
Change-Id: I2a5bd9248d44e8ebe5d839f4f8675aed94048065
diff --git a/tf-tftf-gerrit-tforg-l2.yaml b/tf-tftf-gerrit-tforg-l2.yaml
index e4a907c..06faddb 100644
--- a/tf-tftf-gerrit-tforg-l2.yaml
+++ b/tf-tftf-gerrit-tforg-l2.yaml
@@ -45,7 +45,7 @@
       - workspace-cleanup
       - timestamps
     builders:
-    - shell: |-
+    - shell: |
         #!/bin/bash
 
         set -e