Revert of Re-enable CPU mipmap generation for Ganesh. Aniso mips were landed a while ago. However, the CPU bu…

src/gpu/SkGr.cpp

Index: src/gpu/SkGr.cpp
diff --git a/src/gpu/SkGr.cpp b/src/gpu/SkGr.cpp
index 71d9e620e3a7b062dcf029a79938cf6d9492e9a3..701e763b1e65d19904c22a9c3a73a80a0f6ca91e 100644
--- a/src/gpu/SkGr.cpp
+++ b/src/gpu/SkGr.cpp
@@ -342,12 +342,6 @@
     GrTexture* texture = create_texture_from_yuv(ctx, bitmap, desc);
     if (texture) {
         return texture;
-    }
-
-    // SkMipMap::Build doesn't handle sRGB data correctly (yet).
-    // Failover to the GL code-path for now.
-    if (kLinear_SkColorProfileType != bitmap.profileType()) {
-        return nullptr;
     }
 
     SkASSERT(sizeof(int) <= sizeof(uint32_t));