diff --git a/src/test/regress/input/create_function_1.source b/src/test/regress/input/create_function_1.source
index f89038eb5e9..3d19bd4e7df 100644
--- a/src/test/regress/input/create_function_1.source
+++ b/src/test/regress/input/create_function_1.source
@@ -37,11 +37,6 @@ CREATE FUNCTION autoinc ()
 	AS '@libdir@/autoinc@DLSUFFIX@'
 	LANGUAGE C;
 
-CREATE FUNCTION funny_dup17 ()
-        RETURNS trigger
-        AS '@libdir@/regress@DLSUFFIX@'
-        LANGUAGE C;
-
 CREATE FUNCTION trigger_return_old ()
         RETURNS trigger
         AS '@libdir@/regress@DLSUFFIX@'
diff --git a/src/test/regress/input/create_function_2.source b/src/test/regress/input/create_function_2.source
index b167c8ac6d8..9e6d2942ec7 100644
--- a/src/test/regress/input/create_function_2.source
+++ b/src/test/regress/input/create_function_2.source
@@ -72,11 +72,6 @@ CREATE FUNCTION overpaid(emp)
    AS '@libdir@/regress@DLSUFFIX@'
    LANGUAGE C STRICT;
 
-CREATE FUNCTION boxarea(box)
-   RETURNS float8
-   AS '@libdir@/regress@DLSUFFIX@'
-   LANGUAGE C STRICT;
-
 CREATE FUNCTION interpt_pp(path, path)
    RETURNS point
    AS '@libdir@/regress@DLSUFFIX@'
diff --git a/src/test/regress/output/create_function_1.source b/src/test/regress/output/create_function_1.source
index 557d629ad81..d7798489774 100644
--- a/src/test/regress/output/create_function_1.source
+++ b/src/test/regress/output/create_function_1.source
@@ -35,10 +35,6 @@ CREATE FUNCTION autoinc ()
 	RETURNS trigger
 	AS '@libdir@/autoinc@DLSUFFIX@'
 	LANGUAGE C;
-CREATE FUNCTION funny_dup17 ()
-        RETURNS trigger
-        AS '@libdir@/regress@DLSUFFIX@'
-        LANGUAGE C;
 CREATE FUNCTION trigger_return_old ()
         RETURNS trigger
         AS '@libdir@/regress@DLSUFFIX@'
diff --git a/src/test/regress/output/create_function_2.source b/src/test/regress/output/create_function_2.source
index 8f28bff298a..ac9a7f5cf8d 100644
--- a/src/test/regress/output/create_function_2.source
+++ b/src/test/regress/output/create_function_2.source
@@ -55,10 +55,6 @@ CREATE FUNCTION overpaid(emp)
    RETURNS bool
    AS '@libdir@/regress@DLSUFFIX@'
    LANGUAGE C STRICT;
-CREATE FUNCTION boxarea(box)
-   RETURNS float8
-   AS '@libdir@/regress@DLSUFFIX@'
-   LANGUAGE C STRICT;
 CREATE FUNCTION interpt_pp(path, path)
    RETURNS point
    AS '@libdir@/regress@DLSUFFIX@'