chore: remove dead code in maps & legacy build

[lzxue]

清理死代码（零行为变更）

上一轮包合并 (12→8) 后的走查中发现的零引用文件，纯删除，无新增代码。

maps: 删除零引用 theme.ts ×3

map/theme.ts、mapbox/theme.ts、earth/theme.ts 与 utils/theme.ts 逐字节相同（diff 全空），且全仓无任何 import：

$ grep -rn "from './theme'" packages/maps/src
packages/maps/src/utils/BaseMapService.ts   # 唯一引用方
packages/maps/src/amap-next/map.ts          # 唯一引用方

maps: 删除 tdtmap 孤儿 logo.css

其余 6 个适配器的 map.ts 都有 import './logo.css'，唯独 tdtmap/map.ts 没有，但目录里留有 logo.css —— 孤儿文件。

legacy: 删除旧 rollup 构建脚本

迁移到 father 之前的构建脚本（rollup.config.js、rollup.config.worker.js、rollup-plugin-glsl.js、rollup-plugin-inline-worker.js、rollup-plugin-miniapp.js、bundle.ts），全仓无引用。legacy/dev-docs/、legacy/scripts/ 作为归档保留。

验证

• @antv/l7-maps esm/cjs + umd 全部构建通过
• es 产物仅保留被引用的 utils/theme.ts、amap-next/theme.ts
• tsc、eslint 通过

改动

10 files changed, 336 deletions(-)

[changeset-bot]

⚠️ No Changeset found

Latest commit: 286d148

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[gemini-code-assist]

Code Review

This pull request cleans up the codebase by removing several unused configuration files, Rollup plugins (such as glsl and inline-worker), build configurations, duplicate MapTheme definitions, and CSS styles. I have no feedback to provide as there are no review comments to evaluate.

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