macos installer scripts shouldn't echo

remove the other echoes from these scripts

Change-Id: I46b43aabc0f6080f776e2ec610d748920bc18d3b
Reviewed-on: http://gerrit.openafs.org/1227
Reviewed-by: Simon Wilkinson <sxw@inf.ed.ac.uk>
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Tested-by: Derrick Brashear <shadow@dementia.org>

src/packaging/MacOS/InstallationCheck.10

@@ -1,6 +1,5 @@
 #!/bin/sh
 majorvers=`uname -r | sed 's/\..*//'`
-echo "InstallationCheck: os release is $majorvers"
 if [ $majorvers -ne 10 ]; then
 	exit 112
 fi

src/packaging/MacOS/InstallationCheck.8

@@ -1,6 +1,5 @@
 #!/bin/sh
 majorvers=`uname -r | sed 's/\..*//'`
-echo "InstallationCheck: os release is $majorvers"
 if [ $majorvers -ne 8 ]; then
 	exit 112
 fi

src/packaging/MacOS/InstallationCheck.9

@@ -1,6 +1,5 @@
 #!/bin/sh
 majorvers=`uname -r | sed 's/\..*//'`
-echo "InstallationCheck: os release is $majorvers"
 if [ $majorvers -ne 9 ]; then
 	exit 112
 fi