internal/rosa/cmake: implicit CMAKE_BUILD_TYPE

Lack of this behaviour is a holdover from when the helper was first split from the (now removed) LLVM helper.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/rosa/glslang.go

@@ -17,10 +17,6 @@ func (t Toolchain) newSPIRVHeaders() (pkg.Artifact, string) {
 		"vulkan-sdk-"+version,
 		checksum,
 	), nil, &CMakeHelper{
-		Cache: []KV{
-			{"CMAKE_BUILD_TYPE", "Release"},
-		},
-
 		// upstream has no tests
 		SkipTest: true,
 	}), version
@@ -67,7 +63,6 @@ func (t Toolchain) newSPIRVTools() (pkg.Artifact, string) {
 		checksum,
 	), nil, &CMakeHelper{
 		Cache: []KV{
-			{"CMAKE_BUILD_TYPE", "Release"},
 			{"SPIRV-Headers_SOURCE_DIR", "/system"},
 		},
 	},
@@ -109,7 +104,6 @@ func (t Toolchain) newGlslang() (pkg.Artifact, string) {
 		Chmod:    true,
 	}, &CMakeHelper{
 		Cache: []KV{
-			{"CMAKE_BUILD_TYPE", "Release"},
 			{"BUILD_SHARED_LIBS", "ON"},
 			{"ALLOW_EXTERNAL_SPIRV_TOOLS", "ON"},
 		},