Remove `emergency` from the `fastboot reboot` completions.

Bug: N/A
Test: N/A
Change-Id: Ia22f51061c845ea19a697e86ac109c02960251fa
diff --git a/fastboot/fastboot.bash b/fastboot/fastboot.bash
index a60046b..dca3b4e 100644
--- a/fastboot/fastboot.bash
+++ b/fastboot/fastboot.bash
@@ -85,7 +85,7 @@
                         ;;
                     reboot)
                         if [[ $COMP_CWORD == $i ]]; then
-                            args="bootloader emergency"
+                            args="bootloader"
                             COMPREPLY=( $(compgen -W "${args}" -- "${COMP_WORDS[i]}") )
                         fi
                         ;;