diff --git a/build-constraints.yaml b/build-constraints.yaml
index a5ebffa1..95008bdf 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3884,9 +3884,6 @@ package-flags:
         simplelocalnet: true
         p2p: true
 
-    logfloat:
-        splitbase: true
-
     curl:
         new-base: true
 
@@ -3906,10 +3903,6 @@ package-flags:
     hxt-relaxng:
         network-uri: true
 
-    pandoc:
-        https: true
-        old-locale: false
-
     text:
         integer-simple: false
 
@@ -3919,12 +3912,6 @@ package-flags:
     time-locale-compat:
         old-locale: false
 
-    th-data-compat:
-        template-haskell-210: false
-        template-haskell-212: true
-    th-reify-compat:
-        template-haskell-210: false
-
     HsOpenSSL:
         fast-bignum: false