[test] Use glyph ids instead of forcing ft funcs

We were using ft funcs because these are CFF fonts, but we can avoid
glyph names instead and keep testing both ot and ft.

test/shaping/tests/indic-consonant-with-stacker.tests

diff --git a/test/shaping/tests/indic-consonant-with-stacker.tests b/test/shaping/tests/indic-consonant-with-stacker.tests
index 6a6ea7c..97dc040 100644
--- a/test/shaping/tests/indic-consonant-with-stacker.tests
+++ b/test/shaping/tests/indic-consonant-with-stacker.tests
@@ -1,4 +1,4 @@
-fonts/sha1sum/a014549f766436cf55b2ceb40e462038938ee899.ttf:--font-funcs=ft:U+0CF1,U+0C95:[uni0CF1=0+1129|uni0C95_uni0CCD.blwf=1+358]
-fonts/sha1sum/55c88ebbe938680b08f92c3de20713183e0c7481.ttf:--font-funcs=ft:U+0CF2,U+0CAA:[uni0CF2=0+1539|uni0CAA_uni0CCD.blwf=1+245]
-fonts/sha1sum/341421e629668b1a1242245d39238ca48432d35d.ttf:--font-funcs=ft:U+0CF1:[uni0CF1=0+1129]
-fonts/sha1sum/663aef6b019dbf45ffd74089e2b5f2496ceceb18.ttf:--font-funcs=ft:U+0CF2:[uni0CF2=0+1539]
+fonts/sha1sum/a014549f766436cf55b2ceb40e462038938ee899.ttf:--no-glyph-names:U+0CF1,U+0C95:[2=0+1129|3=1+358]
+fonts/sha1sum/55c88ebbe938680b08f92c3de20713183e0c7481.ttf:--no-glyph-names:U+0CF2,U+0CAA:[2=0+1539|3=1+245]
+fonts/sha1sum/341421e629668b1a1242245d39238ca48432d35d.ttf:--no-glyph-names:U+0CF1:[1=0+1129]
+fonts/sha1sum/663aef6b019dbf45ffd74089e2b5f2496ceceb18.ttf:--no-glyph-names:U+0CF2:[1=0+1539]

test/shaping/tests/indic-script-extensions.tests

diff --git a/test/shaping/tests/indic-script-extensions.tests b/test/shaping/tests/indic-script-extensions.tests
index e336bfc..92bb978 100644
--- a/test/shaping/tests/indic-script-extensions.tests
+++ b/test/shaping/tests/indic-script-extensions.tests
@@ -1,2 +1,2 @@
 fonts/sha1sum/3493e92eaded2661cadde752a39f9d58b11f0326.ttf::U+0BA4,U+0BC6,U+1133C,U+0BAA,U+1133C,U+0BC6,U+1133C:[u0BC6=0+2093|u1133C=0+0|u0BA4=0+1863|u0BC6=3+2093|u1133C=3+0|u0BAA=3+1706|u1133C=3+0]
-fonts/sha1sum/b151cfcdaa77585d77f17a42158e0873fc8e2633.ttf:--font-funcs=ft:U+0BAA,U+11301,U+11303:[uni0BAA=0+535|u11301=0+0|u11303=0+310]
+fonts/sha1sum/b151cfcdaa77585d77f17a42158e0873fc8e2633.ttf:--no-glyph-names:U+0BAA,U+11301,U+11303:[1=0+535|2=0+0|3=0+310]