requirements.rst: remove make as package dependency

The package make is part of build-essential, which is previously
installed, thus there is no need to install it explicitly.

Signed-off-by: Leonardo Sandoval <leonardo.sandoval@linaro.org>
Change-Id: Ie95f2f87057ef144123578fd4e28668164eed3a3
diff --git a/docs/getting_started/requirements.rst b/docs/getting_started/requirements.rst
index 3d06d98..f9417c7 100644
--- a/docs/getting_started/requirements.rst
+++ b/docs/getting_started/requirements.rst
@@ -23,7 +23,7 @@
 
 ::
 
-    sudo apt-get install device-tree-compiler build-essential make git perl libxml-libxml-perl
+    sudo apt-get install device-tree-compiler build-essential git perl libxml-libxml-perl
 
 Download and install the GNU cross-toolchain from Linaro. The TF-A Tests have
 been tested with version 9.2-2019.12 (gcc 9.2):