[tests] Remove Myanmar micro-font and test

test/shaping/tests/context-matching.tests

 fonts/sha1sum/4cce528e99f600ed9c25a2b69e32eb94a03b4ae8.ttf:U+1A48,U+1A58,U+1A25,U+1A48,U+1A58,U+1A25,U+1A6E,U+1A63:[uni1A48=0+1212|uni1A25=0+1912|uni1A58=0+0|uni1A48=3+1212|uni1A6E=3+1212|uni1A25=3+1912|uni1A58=3+0|uni1A63=3+1212]
 fonts/sha1sum/d629e7fedc0b350222d7987345fe61613fa3929a.ttf:U+0915,U+093F,U+0915,U+093F:[ivowelsign03deva=0+530|kadeva=0+1561|ivowelsign03deva=2+530|kadeva=2+1561]
 fonts/sha1sum/f499fbc23865022234775c43503bba2e63978fe1.ttf:U+09B0,U+09CD,U+09A5,U+09CD,U+09AF,U+09C0:[gid1=0+1320|gid13=0+523|gid18=0+545]
-fonts/sha1sum/ceadd106a8205214fbe7337ef9de32a862b59762.ttf:U+1014,U+1039,U+1011,U+1014,U+1039,U+1011,U+1014,U+1039,U+1011:[gid4=0+1118|gid5=0@97,0+600|gid4=3+1118|gid5=3@97,0+600|gid4=6+1118|gid5=6@97,0+0]