Remove CMake build system

Now that the yocto recipe is updated to use meson, remove the CMake
build system and its clutter.

Tested: builds standalone and in yocto

Change-Id: If2174dddcb3b3a7e6b56d8b912d74f2ed6a286c9
Signed-off-by: Vernon Mauery <vernon.mauery@linux.intel.com>
diff --git a/.gitignore b/.gitignore
index 3127bd3..60a287f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,25 +1,8 @@
 /build*
 .idea/
 .vscode
-3rdparty/
-CMakeCache.txt
-CMakeFiles/
-CTestTestfile.cmake
-Makefile
+.*.sw*
+*~
 Testing/
-cmake-build-debug/
-cmake_install.cmake
-compile_commands.json
-googletest-build/
-googletest-src/
-intel-dbus-interfaces-src/
-intel-dbus-interfaces/
-libzinteloemcmds.so*
-phosphor-host-ipmid/
-phosphor-ipmi-host-src/
-prefix/
-runSensorTests
-ipmi-allowlist.hpp
-check-code-coverage*
 subprojects/*
 !subprojects/*.wrap