Remove unused compiler option (#9381)

src/compiler/commandLineParser.ts

@@ -336,16 +336,6 @@ namespace ts {
                 isFilePath: true
             }
         },
-        {
-            name: "typesSearchPaths",
-            type: "list",
-            isTSConfigOnly: true,
-            element: {
-                name: "typesSearchPaths",
-                type: "string",
-                isFilePath: true
-            }
-        },
         {
             name: "typeRoots",
             type: "list",

src/compiler/types.ts

@@ -2590,7 +2590,6 @@ namespace ts {
         types?: string[];
         /** Paths used to used to compute primary types search locations */
         typeRoots?: string[];
-        typesSearchPaths?: string[];
         /*@internal*/ version?: boolean;
         /*@internal*/ watch?: boolean;