use mat*vec shaders for mat*mat

I wrote the mat*mat shaders from scratch so I understand them better but
they are currently not faster than just multiply-invoking the mat*vec
shaders, by a significant degree - so, except for f32 which needed a new
shader, revert to the m*v ones here.

Author: apage43

CMakeLists.txt

@@ -479,12 +479,7 @@ if (LLAMA_KOMPUTE)
           kompute/op_norm.comp
           kompute/op_rmsnorm.comp
           kompute/op_diagmask.comp
-          kompute/op_mul_mat_mat_f16.comp
           kompute/op_mul_mat_mat_f32.comp
-          kompute/op_mul_mat_mat_q4_0.comp
-          kompute/op_mul_mat_mat_q4_1.comp
-          kompute/op_mul_mat_mat_q8_0.comp
-          kompute/op_mul_mat_mat_q6_k.comp
           kompute/op_mul_mat_f16.comp
           kompute/op_mul_mat_q8_0.comp
           kompute/op_mul_mat_q4_0.comp
@@ -515,12 +510,7 @@ if (LLAMA_KOMPUTE)
           shaderop_norm.h
           shaderop_rmsnorm.h
           shaderop_diagmask.h
-          shaderop_mul_mat_mat_f16.h
           shaderop_mul_mat_mat_f32.h
-          shaderop_mul_mat_mat_q4_0.h
-          shaderop_mul_mat_mat_q4_1.h
-          shaderop_mul_mat_mat_q8_0.h
-          shaderop_mul_mat_mat_q6_k.h
           shaderop_mul_mat_f16.h
           shaderop_mul_mat_q8_0.h
           shaderop_mul_mat_q4_0.h