meganzreload: Stop using included prebuilt version of mega-cmd
meganzreload: Stop using included prebuilt version of mega-cmd

 * Remove prebuilt mega-cmd executables
 * Leave the host computer add its own binaries

Change-Id: I4ed39fadba62236ea3672345e2e3776c5f2cde7e
Signed-off-by: Adrian DC <01fb3892f39957945220431e7409156544d2f041@gmail.com>

AdrianDC/android_development_shell_tools,AdrianDC/android_development_shell_tools