Revert "rm change about no_mmproj"

This reverts commit 2cac8e0.

Author: ngxson

common/arg.cpp

@@ -2120,6 +2120,13 @@ common_params_context common_params_parser_init(common_params & params, llama_ex
             params.mmproj.url = value;
         }
     ).set_examples({LLAMA_EXAMPLE_LLAVA}));
+    add_opt(common_arg(
+        {"--no-mmproj"},
+        "explicitly disable multimodal projector, useful when using -hf",
+        [](common_params & params) {
+            params.no_mmproj = true;
+        }
+    ).set_examples({LLAMA_EXAMPLE_LLAVA}));
     add_opt(common_arg(
         {"--image"}, "FILE",
         "path to an image file. use with multimodal models. Specify multiple times for batching",

common/common.h

@@ -342,6 +342,7 @@ struct common_params {
 
     // multimodal models (see examples/llava)
     struct common_params_model mmproj;
+    bool no_mmproj = false;         // explicitly disable multimodal model
     std::vector<std::string> image; // path to image file(s)
 
     // embedding