Deleting all unused files, deleting unused functions from loot-core (#1158)

packages/desktop-client/src/components/SyncNotifications.js

packages/desktop-client/src/components/debug/index.js

packages/desktop-client/src/util.ts

packages/loot-core/src/server/api-models.ts

packages/loot-core/src/server/aql/compiler.ts

packages/loot-core/src/server/errors.ts

packages/loot-core/src/server/perf.ts

packages/loot-core/src/server/spreadsheet/globals.ts

...ges/loot-core/src/server/spreadsheet/new/REQUIREMENTS.txt

...erver/spreadsheet/new/__snapshots__/compiler.test.ts.snap

...c/server/spreadsheet/new/__snapshots__/lexer.test.ts.snap

.../src/server/spreadsheet/new/__snapshots__/vm.test.ts.snap

...ges/loot-core/src/server/spreadsheet/new/compiler.test.ts

packages/loot-core/src/server/spreadsheet/new/compiler.ts

...es/loot-core/src/server/spreadsheet/new/get-sql-fields.ts

packages/loot-core/src/server/spreadsheet/new/lexer.test.ts

packages/loot-core/src/server/spreadsheet/new/lexer.ts

packages/loot-core/src/server/spreadsheet/new/nodes.ts

packages/loot-core/src/server/spreadsheet/new/ops.ts

packages/loot-core/src/server/spreadsheet/new/parser.ts