Remove the copyright_check that was adding submitter to prolog contributor

The addCopyright script was failing in hostboot-ci because when it was
ran on standalone it would add the current submitter of the commit as a
contributor and when it ran on ci it would add the author of the commit
as a contributor. In the past these two have been the same, however if
we were to merge a pull request from a third-party who was not and IBMer
we would fail CI. Now it will only check the author if the copyright_check
flag is set.

Change-Id: I7a360a824d73a89872040932d2e7e3f8a334e770
RTC:117874
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/24389
Tested-by: Jenkins Server
Tested-by: Jenkins OP Build CI
Tested-by: FSP CI Jenkins
Reviewed-by: Stephen M. Cprek <smcprek@us.ibm.com>
Reviewed-by: Elizabeth K. Liner <eliner@us.ibm.com>
Tested-by: Jenkins OP HW
Reviewed-by: William G. Hoffa <wghoffa@us.ibm.com>

Author: crgeddes

src/build/tools/addCopyright.pl

@@ -1100,23 +1100,21 @@ sub getFileContributors
     my $gitAuthors = `git log --follow --find-copies-harder -C85% -M85% --pretty="%aN <%aE>" -- $filename | sort | uniq`;
     my @gitAuthors = split('\n', $gitAuthors);
 
-    # Add current commiter.
+    # Get commit's author
     # If running copyright_check run 'git log' as a commit is not taking place
-    # Otherwise check using 'git config' as this is a pre-commit hook
-    my $curAuthorEmail = "";
-    if ($copyright_check)
-    {
-        $curAuthorEmail = `git log -n1 --pretty=format:"%aN <%aE>"`;
-        chomp($curAuthorEmail);
-    }
-    else
+    # Else we currently have no way of getting the current author. Because
+    # this is a pre-commit hook, the commit staged to be committed does not
+    # show up in 'git log' until commit has completed. We cannot look up
+    # current user's info because the user pushing the commit may not be
+    # the author.
+
+    if($copyright_check)
     {
-        my $curAuthorName = `git config user.name`;
-        $curAuthorEmail = `git config user.email`;
+        my $curAuthorEmail = `git log -n1 --pretty=format:"%aN <%aE>"`;
         chomp($curAuthorEmail);
-        $curAuthorEmail = "$curAuthorName <".$curAuthorEmail.">";
+        push(@gitAuthors, $curAuthorEmail);
     }
-    push(@gitAuthors, $curAuthorEmail);
+
     foreach my $contributor (@gitAuthors)
     {
         my $companyExists = 0;