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/t0102-summary.sh

@@ -5,22 +5,22 @@
 prepare_tests "Check content on summary page"
 
 run_test 'generate foo summary' 'cgit_url "foo" >trash/tmp'
-run_test 'find commit 1' 'grep -e "commit 1" trash/tmp'
-run_test 'find commit 5' 'grep -e "commit 5" trash/tmp'
-run_test 'find branch master' 'grep -e "master" trash/tmp'
-run_test 'no tags' '! grep -e "tags" trash/tmp'
+run_test 'find commit 1' 'grep "commit 1" trash/tmp'
+run_test 'find commit 5' 'grep "commit 5" trash/tmp'
+run_test 'find branch master' 'grep "master" trash/tmp'
+run_test 'no tags' '! grep "tags" trash/tmp'
 run_test 'clone-url expanded correctly' '
-	grep -e "git://example.org/foo.git" trash/tmp
+	grep "git://example.org/foo.git" trash/tmp
 '
 
 run_test 'generate bar summary' 'cgit_url "bar" >trash/tmp'
-run_test 'no commit 45' '! grep -e "commit 45" trash/tmp'
-run_test 'find commit 46' 'grep -e "commit 46" trash/tmp'
-run_test 'find commit 50' 'grep -e "commit 50" trash/tmp'
-run_test 'find branch master' 'grep -e "master" trash/tmp'
-run_test 'no tags' '! grep -e "tags" trash/tmp'
+run_test 'no commit 45' '! grep "commit 45" trash/tmp'
+run_test 'find commit 46' 'grep "commit 46" trash/tmp'
+run_test 'find commit 50' 'grep "commit 50" trash/tmp'
+run_test 'find branch master' 'grep "master" trash/tmp'
+run_test 'no tags' '! grep "tags" trash/tmp'
 run_test 'clone-url expanded correctly' '
-	grep -e "git://example.org/bar.git" trash/tmp
+	grep "git://example.org/bar.git" trash/tmp
 '
 
 tests_done