Revert "[Impeller] add support for COLR fonts and bitmap emojis"

[jonahwilliams]

Reverts #36161

This is failing on Android:

[list_text_layout_impeller_perf__e2e_summary] [STDOUT] stderr: [ +243 ms] VMServiceFlutterDriver: Isolate found with number: 2165495372400231
[list_text_layout_impeller_perf__e2e_summary] [STDOUT] stderr: [  +68 ms] VMServiceFlutterDriver: Isolate is paused at start.
[list_text_layout_impeller_perf__e2e_summary] [STDOUT] stderr: [        ] VMServiceFlutterDriver: Attempting to resume isolate
[list_text_layout_impeller_perf__e2e_summary] [STDOUT] stdout: [  +10 ms] I/flutter (17000): 00:00 +0: list_text_layout
[list_text_layout_impeller_perf__e2e_summary] [STDOUT] stdout: [  +25 ms] E/flutter (17000): [ERROR:flutter/impeller/base/validation.cc(27)] Location for uniform member not known: FRAGINFO.FONTHASCOLOR
[list_text_layout_impeller_perf__e2e_summary] [STDOUT] stdout: [   +3 ms] E/flutter (17000): [ERROR:flutter/impeller/base/validation.cc(38)] Break on ImpellerValidationBreak to inspect point of failure.
[list_text_layout_impeller_perf__e2e_summary] [STDOUT] stdout: [        ] F/flutter (17000): [FATAL:flutter/impeller/renderer/backend/gles/render_pass_gles.cc(516)] Check failed: result. Must be able to encode GL commands without error.
[list_text_layout_impeller_perf__e2e_summary] [STDOUT] stdout: [        ] F/libc    (17000): Fatal signal 6 (SIGABRT), code -6 in tid 17018 (1.raster)
[list_text_layout_impeller_perf__e2e_summary] [STDOUT] stdout: [  +72 ms] *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
[list_text_layout_impeller_perf__e2e_summary] [STDOUT] stdout: [        ] Build fingerprint: 'motorola/athene_amz/athene:7.0/NPJS25.93-14-4/4:user/release-keys'
[list_text_layout_impeller_perf__e2e_summary] [STDOUT] stdout: [        ] Revision: 'p2a0'
[list_text_layout_impeller_perf__e2e_summary] [STDOUT] stdout: [        ] ABI: 'arm'
[list_text_layout_impeller_perf__e2e_summary] [STDOUT] stdout: [        ] pid: 17000, tid: 17018, name: 1.raster  >>> com.example.macrobenchmarks <<<
[list_text_layout_impeller_perf__e2e_summary] [STDOUT] stdout: [        ] signal 6 (SIGABRT), code -6 (SI_TKILL), fault addr --------
[list_text_layout_impeller_perf__e2e_summary] [STDOUT] stdout: [        ] Abort message: '[FATAL:flutter/impeller/renderer/backend/gles/render_pass_gles.cc(516)] Check failed: result. Must be able to encode GL commands without error.
[list_text_layout_impeller_perf__e2e_summary] [STDOUT] stdout: [        ] '
[list_text_layout_impeller_perf__e2e_summary] [STDOUT] stdout: [        ]     r0 00000000  r1 0000427a  r2 00000006  r3 00000008
[list_text_layout_impeller_perf__e2e_summary] [STDOUT] stdout: [        ]     r4 90e58978  r5 00000006  r6 90e58920  r7 0000010c
[list_text_layout_impeller_perf__e2e_summary] [STDOUT] stdout: [        ]     r8 90e576b8  r9 9e78b6cc  sl a0a7f000  fp 8dabf7b0
[list_text_layout_impeller_perf__e2e_summary] [STDOUT] stdout: [        ]     ip 00000000  sp 90e57528  lr ac64d3e7  pc ac64fc44  cpsr 20070010
[list_text_layout_impeller_perf__e2e_summary] [STDOUT] stdout: [   +3 ms] backtrace:
[list_text_layout_impeller_perf__e2e_summary] [STDOUT] stdout: [        ]     #00 pc 00049c44  /system/lib/libc.so (tgkill+12)
[list_text_layout_impeller_perf__e2e_summary] [STDOUT] stdout: [        ]     #01 pc 000473e3  /system/lib/libc.so (pthread_kill+34)
[list_text_layout_impeller_perf__e2e_summary] [STDOUT] stdout: [        ]     #02 pc 0001d535  /system/lib/libc.so (raise+10)
[list_text_layout_impeller_perf__e2e_summary] [STDOUT] stdout: [        ]     #03 pc 00019081  /system/lib/libc.so (__libc_android_abort+34)
[list_text_layout_impeller_perf__e2e_summary] [STDOUT] stdout: [        ]     #04 pc 000170e4  /system/lib/libc.so (abort+4)
[list_text_layout_impeller_perf__e2e_summary] [STDOUT] stdout: [        ]     #05 pc 00011eb3  /data/app/com.example.macrobenchmarks-1/lib/arm/libflutter.so (offset 0x525000)
[list_text_layout_impeller_perf__e2e_summary] [STDOUT] stderr: [+4937 ms] VMServiceFlutterDriver: Flutter Driver extension is taking a long time to become available. Ensure your test app (often "lib/main.dart") imports "package:flutter_driver/driver_extension.dart" and calls enableFlutterDriverExtension() as the first call in main().
[list_text_layout_impeller_perf__e2e_summary] [STDOUT] stdout: [  +27 ms] executing: /opt/s/w/ir/cache/android/sdk/platform-tools/adb -s ZY223CL8VK shell am force-stop com.example.macrobenchmarks
[list_text_layout_impeller_perf__e2e_summary] [STDOUT] stdout: [ +906 ms] executing: /opt/s/w/ir/cache/android/sdk/platform-tools/adb -s ZY223CL8VK uninstall com.example.macrobenchmarks
[list_text_layout_impeller_perf__e2e_summary] [STDOUT] stdout: [ +367 ms] Success

[jonahwilliams]

Easy enough to fix forward, closing