resolver: drop dead ignoreDeprecations from tsconfig.dts.json

Confirmed empirically that it now suppresses nothing under TS 7.0.2:
compiling tsconfig.dts.json directly with this flag set to "6.0",
"7.0", or removed entirely all produce identical (clean) output. It
was a leftover suppression the previous tsdown mode never actually
needed once nothing in the config triggers a deprecation warning.

apps/resolver/tsconfig.dts.json

@@ -1,7 +1,6 @@
 {
   "extends": "./tsconfig.json",
   "compilerOptions": {
-    "ignoreDeprecations": "6.0",
     "isolatedDeclarations": true,
     "allowJs": false
   }