tests: "grep -e" is not portable to all platforms

The "-e" option to grep is not needed unless specifying more than one
pattern, which we don't do.  Remove it to avoid restricting the tests on
platforms that do not have a grep that recognises "-e".

Signed-off-by: John Keeping <john@keeping.me.uk>

tests/t0105-commit.sh

@@ -5,18 +5,18 @@
 prepare_tests "Check content on commit page"
 
 run_test 'generate foo/commit' 'cgit_url "foo/commit" >trash/tmp'
-run_test 'find tree link' 'grep -e "<a href=./foo/tree/.>" trash/tmp'
+run_test 'find tree link' 'grep "<a href=./foo/tree/.>" trash/tmp'
 run_test 'find parent link' 'grep -E "<a href=./foo/commit/\?id=.+>" trash/tmp'
 
 run_test 'find commit subject' '
-	grep -e "<div class=.commit-subject.>commit 5<" trash/tmp
+	grep "<div class=.commit-subject.>commit 5<" trash/tmp
 '
 
-run_test 'find commit msg' 'grep -e "<div class=.commit-msg.></div>" trash/tmp'
-run_test 'find diffstat' 'grep -e "<table summary=.diffstat. class=.diffstat.>" trash/tmp'
+run_test 'find commit msg' 'grep "<div class=.commit-msg.></div>" trash/tmp'
+run_test 'find diffstat' 'grep "<table summary=.diffstat. class=.diffstat.>" trash/tmp'
 
 run_test 'find diff summary' '
-	 grep -e "1 files changed, 1 insertions, 0 deletions" trash/tmp
+	 grep "1 files changed, 1 insertions, 0 deletions" trash/tmp
 '
 
 run_test 'get root commit' '
@@ -31,7 +31,7 @@ run_test 'root commit contains diffstat' '
 
 run_test 'root commit contains diff' '
 	 grep ">diff --git a/file-1 b/file-1<" trash/tmp &&
-	 grep -e "<div class=.add.>+1</div>" trash/tmp
+	 grep "<div class=.add.>+1</div>" trash/tmp
 '
 
 tests_done