Remove obsolete comments/name from several benchtest input files.

These comments refer to slow paths that were removed in
glibc 2.34 or earlier.  The corresponding "names" that yield
separate workload traces for "make bench" are thus obsolete.
We are however keeping the corresponding inputs.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>

benchtests/asin-inputs

@@ -2501,9 +2501,6 @@
 -0x1.e8ac5756ef915p-1
 -0x1.0f9400d75348bp-16
 0x1.916dc64eee2aap-1
-# asin multiple precision fallback path
-# Implemented in __sin32 in sysdeps/ieee754/dbl-64/sincos32.c
-## name: slow
 0x1.c88b2415431cbp-23
 0x1.84a360ccf288dp-20
 0x1.7eff5496b7ed2p-21

benchtests/atan-inputs

@@ -801,9 +801,6 @@
 -0x1.ead7509b0d69ep26
 0x1.86fa30e0b406ep3
 -0x1.acd451c3cb8b6p49
-# atan slow path with 144bit precision
-# Implemented in sysdeps/ieee754/dbl-64/mpatan.c
-## name: 144bits
 0x1.000000c5cba87p0
 0x1.000001883003bp0
 0x1.00000dfb2b675p0

benchtests/cos-inputs

@@ -2301,9 +2301,6 @@
 0x1.31fad3c41d123p34
 -0x1.6757e2c0a08a7p11
 0x1.7f07e07a0a269p288
-# cos slow path at 768 bits
-# Implemented in sysdeps/ieee754/dbl-64/sincos32.c
-## name: 768bits
 0x1.000000cf4a2a2p0
 0x1.0000010b239a9p0
 0x1.00000162a932bp0

benchtests/pow-inputs

@@ -302,8 +302,6 @@
 0x1.c004d2256a5b8p402, -0x1.a01df480fdcb7p98
 0x1.52b9d41aaa1e9p-589, -0x1.292cb15f1459dp46
 -0x1.ea9ca6fa0919ep-279, -0x1.601e44b6a588cp40
-# old pow slow path at 240 bits
-## name: 240bits
 0x1.01fcd33493ea3p596, -0x1.724bd4e887783p-14
 0x1.032ff59ab34fdp-540, -0x1.61e3632080b87p-24
 0x1.045c337b80f53p304, 0x1.dc3404c30fa69p-56
@@ -404,8 +402,6 @@
 0x1.fae913d4f952ep-809, -0x1.4b649402fce63p-6
 0x1.fe6d725408f24p484, -0x1.25f4f6441d2e4p-12
 0x1.ff6393f9150ccp-718, 0x1.a0cb50a9bf2f3p-31
-# old pow slowest path at 768 bits
-## name: 768bits
 1.0000000000000020, 1.5
 0x1.006777b4b61dep843, -0x1.67e3145491872p-1
 0x1.0477a5cfb1972p-402, 0x1.8742e7a1ce99dp-1

benchtests/sin-inputs

@@ -2801,9 +2801,6 @@
 0x1.77e333e16d85dp13
 0x1.ee51c6871309bp605
 -0x1.c61080b14654fp0
-# sin slowest path at 768 bits
-# Implemented in sysdeps/ieee754/dbl-64/sincos32.c
-## name: 768bits
 0.93340582292648832662962377071381
 2.3328432680770916363144351635128
 3.7439477503636453548097051680088

benchtests/tan-inputs

@@ -3244,10 +3244,6 @@
 -0x1.2a3e75ea2ae07p2
 -0x1.90fb35edc8d06p0
 0x1.9a76161e739c7p0
-# tan slow path at 240 bits
-# Implemented in sysdeps/ieee754/dbl-64/mptan.c
-# Range reduction is done using mp arithmetic.
-## name: 240bits
 0x1.ee5a221c1ec30p750
 0x1.d0b7237b90954p983
 0x1.50aee539c99e6p817
@@ -3448,9 +3444,6 @@
 -0x1.8698a10662bffp544
 0x1.a07c20fa799d8p622
 -0x1.d126c657c582bp880
-# tan slowest path at 768 bits
-# Implemented in sysdeps/ieee754/dbl-64/mptan.c
-## name: 768bits
 0x1.dffffffffff1fp-22
 0x1.810f60836538dp143
 -0x1.e877a52501e08p134