doc: updated documentation for installing google-perftools

Made updated changes per @tchaikov's request

Signed-off-by: James McClune <[email protected]>

doc/install/get-packages.rst

@@ -119,10 +119,6 @@ release::
 
 	echo deb https://download.ceph.com/debian-{release-name}/ $(lsb_release -sc) main | sudo tee /etc/apt/sources.list.d/ceph.list
 
-Ceph on ARM processors requires Google's memory profiling tools (``google-perftools``). ::
-
-	sudo apt-get install google-perftools libgoogle-perftools-dev	
-
 For development release packages, add our package repository to your system's
 list of APT sources.  See `the testing Debian repository`_ for a complete list
 of Debian and Ubuntu releases supported. ::