[CMake] Remove the 'lang-docs' component entirely.

...on Dmitri's prompting.

Author: jrose-apple

CMakeLists.txt

@@ -77,7 +77,7 @@ set(SWIFT_ENABLE_GOLD_LINKER FALSE CACHE BOOL
     "Enable using the gold linker when available")
 
 set(_SWIFT_KNOWN_INSTALL_COMPONENTS
-    "compiler;clang-builtin-headers;clang-resource-dir-symlink;clang-builtin-headers-in-clang-resource-dir;clang-libclang;arclite-symlink;stdlib;stdlib-experimental;sdk-overlay;editor-integration;lang-docs;tools;testsuite-tools;dev;sourcekit-xpc-service;sourcekit-inproc")
+    "compiler;clang-builtin-headers;clang-resource-dir-symlink;clang-builtin-headers-in-clang-resource-dir;clang-libclang;arclite-symlink;stdlib;stdlib-experimental;sdk-overlay;editor-integration;tools;testsuite-tools;dev;sourcekit-xpc-service;sourcekit-inproc")
 
 # Set the SWIFT_INSTALL_COMPONENTS variable to the default value if it is not passed in via -D
 set(SWIFT_INSTALL_COMPONENTS "${_SWIFT_KNOWN_INSTALL_COMPONENTS}" CACHE STRING

utils/build-presets.ini

@@ -440,7 +440,7 @@ install-lldb
 install-llbuild
 install-swiftpm
 install-prefix=/usr
-swift-install-components=compiler;clang-builtin-headers;stdlib;sdk-overlay;lang-docs;dev
+swift-install-components=compiler;clang-builtin-headers;stdlib;sdk-overlay;dev
 build-swift-static-stdlib=1
 skip-test-lldb=1