cmake: drop obsolete items from TODO and INSTALL-CMAKE

- INSTALL-CMAKE: delete `Current flaws in the curl CMake build` section.
  #1123 was fixed in 7e93637acd #2443

- TODO: delete item 3.2.
  Follow-up to 1cb4f5d6e8 #1879

Closes #15405

docs/INSTALL-CMAKE.md

@@ -16,23 +16,6 @@ instructions below for the platform you are building on.
 CMake builds can be configured either from the command line, or from one of
 CMake's GUIs.
 
-# Current flaws in the curl CMake build
-
-Missing features in the CMake build:
-
- - Builds libcurl without large file support
- - Does not support all SSL libraries (only OpenSSL, Schannel, Secure
-   Transport, and mbedTLS, wolfSSL)
- - Does not allow different resolver backends (no c-ares build support)
- - No RTMP support built
- - Does not allow build curl and libcurl debug enabled
- - Does not allow a custom CA bundle path
- - Does not allow you to disable specific protocols from the build
- - Does not find or use krb4 or GSS
- - Rebuilds test files too eagerly, but still cannot run the tests
- - Does not detect the correct `strerror_r` flavor when cross-compiling
-   (issue #1123)
-
 # Configuring
 
 A CMake configuration of curl is similar to the autotools build of curl.

docs/TODO

@@ -59,7 +59,6 @@
 
  3. Documentation
  3.1 Improve documentation about fork safety
- 3.2 Provide cmake config-file
 
  4. FTP
  4.1 HOST
@@ -546,12 +545,6 @@
 
  See https://github.com/curl/curl/issues/6968
 
-3.2 Provide cmake config-file
-
- A config-file package is a set of files provided by us to allow applications
- to write cmake scripts to find and use libcurl easier. See
- https://github.com/curl/curl/issues/885
-
 4. FTP
 
 4.1 HOST