chore: Update generate-rollup-config to drop older browser support

[alex-barstow]

Description

This updates the default browserslist used by babel. It drops support for some older browsers including IE 11. This also removes the browserslist in package.json so we use the default list from @videojs/babel-config (linked above).

NOTE: Merge with BREAKING CHANGE header.

[codecov[bot]]

Codecov Report

Merging #1306 (24a95a7) into next (74d3517) will increase coverage by 0.02%. The diff coverage is 98.14%.

@@            Coverage Diff             @@
##             next    #1306      +/-   ##
==========================================
+ Coverage   86.25%   86.27%   +0.02%     
==========================================
  Files          39       39              
  Lines        9725     9791      +66     
  Branches     2267     2275       +8     
==========================================
+ Hits         8388     8447      +59     
- Misses       1337     1344       +7     

Impacted Files	Coverage Δ
src/media-segment-request.js	95.40% <ø> (ø)
src/playlist-selectors.js	87.05% <ø> (ø)
src/reload-source-on-error.js	97.72% <ø> (+0.05%)	:arrow_up:
src/util/text-tracks.js	87.03% <ø> (-2.49%)	:arrow_down:
src/videojs-http-streaming.js	90.40% <93.33%> (+0.43%)	:arrow_up:
src/bin-utils.js	51.35% <100.00%> (ø)
src/dash-playlist-loader.js	90.05% <100.00%> (+0.02%)	:arrow_up:
src/master-playlist-controller.js	94.95% <100.00%> (-0.15%)	:arrow_down:
src/media-groups.js	98.66% <100.00%> (ø)
src/playback-watcher.js	98.33% <100.00%> (-0.45%)	:arrow_down:
... and 18 more

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