glx: stop exporting EXT_texture_object functions from libGLX_mesa.so

These aliases of the non-EXT functions have a non-aliased indirect GLX
implementation. Remove it since it's not needed.

Reviewed-by: Adam Jackson <ajax@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34002>

src/mapi/glapi/gen/gl_API.xml

@@ -8591,7 +8591,6 @@
         <param name="textures" type="const GLuint *" count="n"/>
         <param name="residences" type="GLboolean *" output="true" count="n"/>
         <return type="GLboolean"/>
-        <glx vendorpriv="11" handcode="client" always_array="true"/>
     </function>
 
     <function name="BindTextureEXT" alias="BindTexture">
@@ -8602,19 +8601,16 @@
     <function name="DeleteTexturesEXT" alias="DeleteTextures">
         <param name="n" type="GLsizei" counter="true"/>
         <param name="textures" type="const GLuint *" count="n"/>
-        <glx vendorpriv="12"/>
     </function>
 
     <function name="GenTexturesEXT" alias="GenTextures">
         <param name="n" type="GLsizei" counter="true"/>
         <param name="textures" type="GLuint *" output="true" count="n"/>
-        <glx vendorpriv="13" always_array="true"/>
     </function>
 
     <function name="IsTextureEXT" alias="IsTexture">
         <param name="texture" type="GLuint"/>
         <return type="GLboolean"/>
-        <glx vendorpriv="14"/>
     </function>
 
     <function name="PrioritizeTexturesEXT" alias="PrioritizeTextures">