Removed the options to disable lightmap and ambient probes from lightweight as they dont' make sense. Renames linear settings to force linear

ScriptableRenderPipeline/LightweightPipeline/Shaders/LightweightInput.cginc

 #define _MULTIPLE_LIGHTS
 #endif
 
-#if defined(UNITY_COLORSPACE_GAMMA) && defined(LIGHTWEIGHT_LINEAR)
+#if defined(UNITY_COLORSPACE_GAMMA) && defined(_LIGHTWEIGHT_FORCE_LINEAR)
-//#define LIGHTWEIGHT_GAMMA_TO_LINEAR(gammaColor) gammaColor * gammaColor
-//#define LIGHTWEIGHT_LINEAR_TO_GAMMA(linColor) sqrt(color)
-#define LIGHTWEIGHT_GAMMA_TO_LINEAR(sRGB) sRGB * (sRGB * (sRGB * 0.305306011h + 0.682171111h) + 0.012522878h)
-#define LIGHTWEIGHT_LINEAR_TO_GAMMA(linRGB) max(1.055h * pow(max(linRGB, 0.h), 0.416666667h) - 0.055h, 0.h)
+#define LIGHTWEIGHT_GAMMA_TO_LINEAR(gammaColor) gammaColor * gammaColor
+#define LIGHTWEIGHT_LINEAR_TO_GAMMA(linColor) sqrt(color)
+//#define LIGHTWEIGHT_GAMMA_TO_LINEAR(sRGB) sRGB * (sRGB * (sRGB * 0.305306011h + 0.682171111h) + 0.012522878h)
+//#define LIGHTWEIGHT_LINEAR_TO_GAMMA(linRGB) max(1.055h * pow(max(linRGB, 0.h), 0.416666667h) - 0.055h, 0.h)
 #else
 #define LIGHTWEIGHT_GAMMA_TO_LINEAR(color) color
 #define LIGHTWEIGHT_LINEAR_TO_GAMMA(color) color
 {
 #ifdef _SPECGLOSSMAP
     specularGloss = tex2D(_SpecGlossMap, uv);
-#if defined(UNITY_COLORSPACE_GAMMA) && defined(LIGHTWEIGHT_LINEAR)
+#if defined(UNITY_COLORSPACE_GAMMA) && defined(_LIGHTWEIGHT_FORCE_LINEAR)
     specularGloss.rgb = LIGHTWEIGHT_GAMMA_TO_LINEAR(specularGloss.rgb);
 #endif
 #elif defined(_SPECGLOSSMAP_BASE_ALPHA)

ScriptableRenderPipeline/LightweightPipeline/Shaders/LightweightLighting.cginc

     o.diffuse = (DecodeLightmap(UNITY_SAMPLE_TEX2D(unity_Lightmap, lightmapUV)));
 #endif
 
-#if defined(_VERTEX_LIGHTS) || defined(_LIGHT_PROBES_ON)
+#if defined(_VERTEX_LIGHTS) || !defined(LIGHTMAP_ON)
     o.diffuse += ambientColor;
 #endif
     o.diffuse *= occlusion;

ScriptableRenderPipeline/LightweightPipeline/Shaders/LightweightPassLit.cginc

 //    }
 //#endif
 
-#if defined(_LIGHT_PROBES_ON) && !defined(LIGHTMAP_ON)
+#if !defined(LIGHTMAP_ON)
     o.fogCoord.yzw += max(half3(0, 0, 0), ShadeSH9(half4(normal, 1)));
 #endif
 
 
 #if defined(LIGHTMAP_ON)
     color += (DecodeLightmap(UNITY_SAMPLE_TEX2D(unity_Lightmap, i.uv01.zw)) + i.fogCoord.yzw) * diffuse;
-#elif defined(_VERTEX_LIGHTS) || defined(_LIGHT_PROBES_ON)
+#endif
+
+#if defined(_VERTEX_LIGHTS) || !defined(LIGHTMAP_ON)
     color += i.fogCoord.yzw * diffuse;
 #endif
 

ScriptableRenderPipeline/LightweightPipeline/Shaders/LightweightStandardShaderPBS.shader

             #pragma shader_feature _PARALLAXMAP
 
             #pragma multi_compile _ _SINGLE_DIRECTIONAL_LIGHT _SINGLE_SPOT_LIGHT _SINGLE_POINT_LIGHT
-            #pragma multi_compile _ LIGHTWEIGHT_LINEAR
+            #pragma multi_compile _ _LIGHTWEIGHT_FORCE_LINEAR
-            #pragma multi_compile _ _LIGHT_PROBES_ON
             #pragma multi_compile _ _HARD_SHADOWS _SOFT_SHADOWS _HARD_SHADOWS_CASCADES _SOFT_SHADOWS_CASCADES
             #pragma multi_compile _ _VERTEX_LIGHTS
             #pragma multi_compile _ _ATTENUATION_TEXTURE

ScriptableRenderPipeline/LightweightPipeline/Shaders/LightweightStandardSimpleLighting.shader

 
         [Enum(UV0,0,UV1,1)] _UVSec("UV Set for secondary textures", Float) = 0
 
-            // Blending state
-            [HideInInspector] _Mode("__mode", Float) = 0.0
-            [HideInInspector] _SrcBlend("__src", Float) = 1.0
-            [HideInInspector] _DstBlend("__dst", Float) = 0.0
-            [HideInInspector] _ZWrite("__zw", Float) = 1.0
+        // Blending state
+        [HideInInspector] _Mode("__mode", Float) = 0.0
+        [HideInInspector] _SrcBlend("__src", Float) = 1.0
+        [HideInInspector] _DstBlend("__dst", Float) = 0.0
+        [HideInInspector] _ZWrite("__zw", Float) = 1.0
     }
 
     SubShader
             #pragma shader_feature _EMISSION
             #pragma shader_feature _ _REFLECTION_CUBEMAP _REFLECTION_PROBE
 
-            #pragma multi_compile _ LIGHTWEIGHT_LINEAR
+            #pragma multi_compile _ _LIGHTWEIGHT_FORCE_LINEAR
-            #pragma multi_compile _ _LIGHT_PROBES_ON
             #pragma multi_compile _ _HARD_SHADOWS _SOFT_SHADOWS _HARD_SHADOWS_CASCADES _SOFT_SHADOWS_CASCADES
             #pragma multi_compile _ _VERTEX_LIGHTS
             #pragma multi_compile _ _ATTENUATION_TEXTURE
             ENDCG
         }
 
-            Pass
+        Pass
         {
             Tags{"Lightmode" = "ShadowCaster"}