ci: use CMAKE_EXTRA_PARAMS in LuaJIT workflow

As a result of the commit 98fcd437 ("ci:
add CMAKE_EXTRA_PARAMS to LuaJIT workflow") both <inputs.buildtype> and
<inputs.GC64> parameters have become obsolete. All jobs with LuaJIT
integration testing has started to use these in scope of the commit
tarantool/luajit@5b53850da30e532ced976e95af1f301667a6a272 ("ci: use
CMAKE_EXTRA_PARAMS in LuaJIT integration"). Hence, the value of
<inputs.CMAKE_EXTRA_PARAMS> has to be used to specify the build flavor,
so <inputs.buildtype> and <inputs.GC64> can be dropped later.

NO_DOC=ci
NO_TEST=ci
NO_CHANGELOG=ci

Reviewed-by: Yaroslav Lobankov <y.lobankov@tarantool.org>
Signed-off-by: Igor Munkin <imun@tarantool.org>

.github/workflows/luajit-integration.yml

@@ -2,7 +2,7 @@
 # implement integration testing without manual LuaJIT submodule
 # bump and draft PR creation.
 # It bumps the given LuaJIT revision for the given Tarantool
-# release, builds Tarantool with the given buildtype and GC64
+# release, builds Tarantool with the given CMAKE_EXTRA_PARAMS
 # option and runs Tarantool testing suite.
 
 name: LuaJIT integration testing
@@ -96,7 +96,5 @@ jobs:
 
       - name: Run tests
         env:
-          CMAKE_EXTRA_PARAMS: >
-            -DCMAKE_BUILD_TYPE=${{ inputs.buildtype }}
-            -DLUAJIT_ENABLE_GC64=${{ inputs.GC64 }}
+          CMAKE_EXTRA_PARAMS: ${{ inputs.CMAKE_EXTRA_PARAMS }}
         run: make -f .test.mk test-luajit-${{ inputs.os }}-${{ inputs.arch }}