t1300: attempting to remove a non-existent .git/config is not an error

Since some tests before test number 79 ("quoting") are skipped, .git/config
does not exist and 'rm .git/config' fails. Fix this particular case.

While at it, move other instance of 'rm .git/config' that occur in this
file inside the test function to document that the test cases want to
protect themselves from remnants of earlier tests.

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t1300-repo-config.sh

@@ -552,8 +552,6 @@ EOF
 test_expect_success "section was removed properly" \
 	"test_cmp expect .git/config"
 
-rm .git/config
-
 cat > expect << EOF
 [gitcvs]
 	enabled = true
@@ -564,6 +562,7 @@ EOF
 
 test_expect_success 'section ending' '
 
+	rm -f .git/config &&
 	git config gitcvs.enabled true &&
 	git config gitcvs.ext.dbname %Ggitcvs1.%a.%m.sqlite &&
 	git config gitcvs.dbname %Ggitcvs2.%a.%m.sqlite &&
@@ -636,8 +635,6 @@ test_expect_success 'invalid bool (set)' '
 
 	test_must_fail git config --bool bool.nobool foobar'
 
-rm .git/config
-
 cat > expect <<\EOF
 [bool]
 	true1 = true
@@ -652,6 +649,7 @@ EOF
 
 test_expect_success 'set --bool' '
 
+	rm -f .git/config &&
 	git config --bool bool.true1 01 &&
 	git config --bool bool.true2 -1 &&
 	git config --bool bool.true3 YeS &&
@@ -662,8 +660,6 @@ test_expect_success 'set --bool' '
 	git config --bool bool.false4 FALSE &&
 	cmp expect .git/config'
 
-rm .git/config
-
 cat > expect <<\EOF
 [int]
 	val1 = 1
@@ -673,13 +669,12 @@ EOF
 
 test_expect_success 'set --int' '
 
+	rm -f .git/config &&
 	git config --int int.val1 01 &&
 	git config --int int.val2 -1 &&
 	git config --int int.val3 5m &&
 	cmp expect .git/config'
 
-rm .git/config
-
 cat >expect <<\EOF
 [bool]
 	true1 = true
@@ -693,6 +688,7 @@ cat >expect <<\EOF
 EOF
 
 test_expect_success 'get --bool-or-int' '
+	rm -f .git/config &&
 	(
 		echo "[bool]"
 		echo true1
@@ -712,7 +708,6 @@ test_expect_success 'get --bool-or-int' '
 
 '
 
-rm .git/config
 cat >expect <<\EOF
 [bool]
 	true1 = true
@@ -726,6 +721,7 @@ cat >expect <<\EOF
 EOF
 
 test_expect_success 'set --bool-or-int' '
+	rm -f .git/config &&
 	git config --bool-or-int bool.true1 true &&
 	git config --bool-or-int bool.false1 false &&
 	git config --bool-or-int bool.true2 yes &&
@@ -736,8 +732,6 @@ test_expect_success 'set --bool-or-int' '
 	test_cmp expect .git/config
 '
 
-rm .git/config
-
 cat >expect <<\EOF
 [path]
 	home = ~/
@@ -746,6 +740,7 @@ cat >expect <<\EOF
 EOF
 
 test_expect_success NOT_MINGW 'set --path' '
+	rm -f .git/config &&
 	git config --path path.home "~/" &&
 	git config --path path.normal "/dev/null" &&
 	git config --path path.trailingtilde "foo~" &&
@@ -794,7 +789,7 @@ cat > expect << EOF
 	hash = "test#test"
 EOF
 test_expect_success 'quoting' '
-	rm .git/config &&
+	rm -f .git/config &&
 	git config quote.leading " test" &&
 	git config quote.ending "test " &&
 	git config quote.semicolon "test;test" &&